Lincoln Aviator: Evaporative Emissions - 3.0L EcoBoost / Diagnosis and Testing - Evaporative Emissions

Diagnostic Trouble Code (DTC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Diagnostic Trouble Code Chart


Module   DTC Description Action
  PCM P00FE:00 EVAP System Tank Vapor Line Restricted/Blocked: No Sub Type Information   GO to Pinpoint Test HX
  PCM P043E:00 EVAP System Leak Detection Reference Orifice Low Flow: No Sub Type Information   GO to Pinpoint Test HX
  PCM P043F:00 EVAP System Leak Detection Reference Orifice High Flow: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0442:00 EVAP System Leak Detected (Small Leak): No Sub Type Information   GO to Pinpoint Test HX
  PCM P0443:00 EVAP System Purge Control Valve A Circuit: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0446:00 EVAP System Vent Control Circuit: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0451:00 EVAP System Pressure Sensor / Switch A Circuit Range / Performance: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0452:00 EVAP System Pressure Sensor / Switch A Circuit Low: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0453:00 EVAP System Pressure Sensor / Switch A Circuit High: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0454:00 EVAP System Pressure Sensor / Switch A Circuit Intermittent: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0455:00 EVAP System Leak Detected (Large Leak): No Sub Type Information   GO to Pinpoint Test HX
  PCM P0456:00 EVAP System Leak Detected (Very Small Leak): No Sub Type Information   GO to Pinpoint Test HX
  PCM P0457:00 EVAP System Leak Detected (Fuel Cap Loose / Off): No Sub Type Information   GO to Pinpoint Test HX
  PCM P0460:00 Fuel Level Sensor A Circuit: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0461:00 Fuel Level Sensor A Circuit Range/Performance: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0462:00 Fuel Level Sensor A Circuit Low: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0463:00 Fuel Level Sensor A Circuit High: No Sub Type Information   GO to Pinpoint Test HX
  PCM P0496:00 EVAP System High Purge Flow: No Sub Type Information   GO to Pinpoint Test HX
  PCM P04EA:00 EVAP System Small Leak Detected - Fuel Tank Side: No Sub Type Information   GO to Pinpoint Test HX
  PCM P04EB:00 EVAP System Small Leak Detected - Fresh Air Side: No Sub Type Information   GO to Pinpoint Test HX
  PCM P04ED:00 EVAP System Large Leak Detected - Fresh Air Side: No Sub Type Information   GO to Pinpoint Test HX
  PCM P04EE:00 EVAP System Very Small Leak Detected - Fuel Tank Side: No Sub Type Information   GO to Pinpoint Test HX
  PCM P04EF:00 EVAP System Very Small Leak Detected - Fresh Air Side: No Sub Type Information   GO to Pinpoint Test HX
  PCM P04F0:00 EVAP System High Load Purge Line A Performance: No Sub Type Information   GO to Pinpoint Test HX
  PCM P144A:00 EVAP System Purge Vapor Line Restricted/Blocked: No Sub Type Information   GO to Pinpoint Test HX
  PCM P144B:00 EVAP System Secondary Purge Vapor Line Restricted/Blocked: No Sub Type Information   GO to Pinpoint Test HX
  PCM P144C:00 EVAP System Purge Flow Performance During Boost: No Sub Type Information   GO to Pinpoint Test HX
  PCM P1450:00 Unable To Bleed Up Fuel Tank Vacuum: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2401:00 EVAP System Leak Detection Pump Control Circuit Low: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2402:00 EVAP System Leak Detection Pump Control Circuit High: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2418:00 EVAP System Switching Valve Control Circuit/Open: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2450:00 EVAP System Switching Valve Performance/Stuck Open: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2451:00 EVAP System Switching Valve Stuck Closed: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24B9:00 EVAP System Leak Detection Pump Pressure Sensor Circuit Range/Performance: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24BA:00 EVAP System Leak Detection Pump Pressure Sensor Circuit Low: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24BB:00 EVAP System Leak Detection Pump Pressure Sensor Circuit High: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24BC:00 EVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24BE:00 EVAP System Leak Detection Pump Vacuum Switching Valve Control Circuit Low: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24BF:00 EVAP System Leak Detection Pump Vacuum Switching Valve Control Circuit High: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24C0:00 EVAP System Leak Detection Pump Vacuum Switching Valve Stuck On: No Sub Type Information   GO to Pinpoint Test HX
  PCM P24C1:00 EVAP System Leak Detection Pump Vacuum Switching Valve Performance/Stuck Off: No Sub Type Information   GO to Pinpoint Test HX
  PCM P260F:00 EVAP System Monitoring Processor Performance: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2DDA:00 EVAP System Leak Detection Pump Performance/Stuck Off: No Sub Type Information   GO to Pinpoint Test HX
  PCM P2DDB:00 EVAP System Leak Detection Pump Stuck On: No Sub Type Information   GO to Pinpoint Test HX

Global Customer Symptom Code (GCSC) Chart

Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices.
REFER to: Diagnostic Methods (100-00 General Information, Description and Operation).


  Global Customer Symptom Code Chart


Customer Symptom Action
Driving Performance > Runs Rough > All Running Modes > Always   GO to Pinpoint Test HX

Pinpoint Tests


PINPOINT TEST HX : EVAPORATIVE EMISSION (EVAP) SYSTEM AND MONITOR

  WARNING: Before working on or disconnecting any of the fuel tubes or fuel system components, relieve the fuel system pressure to prevent accidental spraying of fuel. Fuel in the fuel system remains under high pressure, even when the engine is not running. Failure to follow this instruction may result in serious personal injury.

  WARNING: When handling fuel, always observe fuel handling precautions and be prepared in the event of fuel spillage. Spilled fuel may be ignited by hot vehicle components or other ignition sources. Failure to follow these instructions may result in serious personal injury.

NOTICE: Do not apply smoke to the EVAP leak detection control module. Internal module damage may result.

NOTE: Use this pinpoint test only when directed here.

  • Using a soap solution around the fuel filler cap or capless fuel tank filler pipe (if equipped) or using the hydrocarbon emission analyzer to determine an evaporative emission system leak is not recommended.
  • When using the Evaporative Emission Leak Detector With On Board Nitrogen Generator 218-522C or equivalent, the fuel level in the fuel tank must be less than 85% full.

Normal Operation and Fault Conditions

For additional information on the EVAP system, refer to the Evaporative Emission (EVAP) Systems description.

DTC Fault Trigger Conditions

DTC Description Fault Trigger Condition
PCM P00FE:00 EVAP System Tank Vapor Line Restricted/Blocked: No Sub Type Information Sets when the PCM detects a restriction and the counter is incremented and the counter reaches a calibrated number of completions. The PCM monitors the EVAP system for a restricted fuel vapor tube between the fuel tank pressure sensor and the fuel tank. During the initial phase of the EVAP monitor, the PCM closes the canister vent and a vacuum develops in the fuel vapor tubes and lines and in the fuel tank. The PCM monitors the fuel tank pressure sensor to determine the amount of vacuum and how quickly the vacuum increases. The rate at which the vacuum increases is compared to an expected value. If the vacuum increases quicker than expected, a restricted fuel vapor tube is suspected and an intrusive test is carried out in the final phase of the EVAP monitor. Check the fuel vapor tube for a restriction between the fuel tank pressure sensor and the fuel tank.
PCM P043E:00 EVAP System Leak Detection Reference Orifice Low Flow: No Sub Type Information Sets when the PCM detects an EVAP leak detection control module internal concern.
PCM P043F:00 EVAP System Leak Detection Reference Orifice High Flow: No Sub Type Information Sets when the PCM detects an EVAP leak detection control module internal concern.
PCM P0442:00 EVAP System Leak Detected (small leak): No Sub Type Information Sets when the PCM detects a small fuel vapor leak by the EVAP running loss monitor test. Check for a missing fuel filler cap or the integrity of the cap (if equipped). Verify the capless fuel tank filler pipe is sealed correctly (if equipped). Install and remove the supplemental fueling adapter five times in the capless fuel tank filler pipe to clear debris on the seal. Refer to the Owner Literature for the location of the supplemental fueling adapter in the vehicle. Check for loose or damaged vapor hoses. Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, and canister vent hose assembly for contamination or debris.
PCM P0443:00 EVAP System Purge Control Valve "A" Circuit: No Sub Type Information Sets when the PCM detects the signal moves outside the minimum or maximum limit for the commanded state. To verify normal function, monitor the EVMV PID or EVAP canister pressure PID and the signal voltage ( PCM control side). With the valve closed, the EVMV indicates 0 mA (0% duty cycle for EVAP canister pressure) and voltage approximately equal to battery voltage. When the valve is commanded fully open, EVMV indicates 1,000 mA (100% duty cycle for EVAP canister pressure) and a voltage drop of 3 volts minimum is normal.
PCM P0446:00 EVAP System Vent Control Circuit: No Sub Type Information Sets when the PCM detects the signal moves outside the minimum or maximum allowable calibrated parameters for a specified EVAP canister vent valve duty cycle by PCM command. To verify normal function, monitor the EVAP canister vent valve signal PID EVAP canister vent and the signal voltage ( PCM control side). With the valve open, EVAP canister vent indicates 0% duty cycle and a voltage approximately equal to battery voltage. When the valve is commanded fully closed, EVAP canister vent indicates 100% duty cycle, and a minimum voltage drop of 4 volts is normal.
PCM P0451:00 EVAP System Pressure Sensor/Switch "A" Circuit Range/Performance: No Sub Type Information Sets when the PCM detects a fuel tank pressure sensor range (offset) concern is detected. The fuel tank pressure sensor output is offset by greater than 1.7 inches of water or less than -1.7 inches of water. With the fuel tank pressure (FTP) sensor at atmospheric pressure, the FTP PID normally indicates 0 inches of water. Remove the fuel filler cap or, for vehicles with a capless fuel filler pipe, install the supplemental refueling adaptor provided with the vehicle to open the capless fuel tank filler pipe. After installing the supplemental refueling adaptor or removing the fuel filler cap, wait one minute to allow the pressure in the fuel tank to equalize with the ambient air pressure before accessing the PID.
PCM P0452:00 EVAP System Pressure Sensor/Switch "A" Circuit Low: No Sub Type Information Sets when the PCM detects the fuel tank pressure sensor signal average drops below a minimum allowable calibrated parameter. A FTP voltage PID reading less than 0.22 volt in ignition ON, engine OFF or ignition ON, engine running indicates a concern is present.
PCM P0453:00 EVAP System Pressure Sensor/Switch "A" Circuit High: No Sub Type Information Sets when the PCM detects the fuel tank pressure sensor signal average jumps above a minimum allowable calibrated parameter. A FTP voltage PID reading greater than 4.85 volt in ignition ON, engine OFF or ignition ON, engine running indicates a concern is present.
PCM P0454:00 EVAP System Pressure Sensor/Switch "A" Circuit Intermittent: No Sub Type Information Sets when the PCM detects the fuel tank pressure changes greater than 14 inches of water in 0.10 seconds. Monitor the FTP PID and note if it changes from greater than 15 inches of water to less than minus (-) 15 inches of water often in 1 minute.
PCM P0455:00 EVAP System Leak Detected - Large Leak: No Sub Type Information Sets when the PCM detects no purge flow, which is attributed to fuel vapor restrictions, a large fuel vapor leak, or multiple fuel vapor leaks are detected by the EVAP running loss monitor test with the engine running, but not at idle. The PCM monitors the complete EVAP control system for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks. Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister and fuel tank. Verify the capless fuel tank filler pipe is sealed correctly. Install and remove the supplemental fueling adapter five times in the capless fuel tank filler pipe to clear debris on the seal. Refer to the Owner's's Literature for the location of the supplemental fueling adapter in the vehicle.
PCM P0456:00 EVAP System Leak Detected (very small leak): No Sub Type Information Sets when the PCM detects a very small fuel vapor leak by the engine off natural vacuum leak check monitor. Refer to the EVAP Leak Check Monitor, Engine Off Natural Vacuum Leak Check Monitor description for additional information. Check for a missing fuel filler cap or the integrity of the cap (if equipped). Verify the capless fuel tank filler pipe is sealed correctly (if equipped). Install and remove the supplemental fueling adapter five times in the capless fuel tank filler pipe to clear debris on the seal. Refer to the Owner's's Literature for the location of the supplemental fueling adapter in the vehicle. Check for loose or damaged vapor hoses. Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, and EVAP canister vent hose assembly for contamination or debris.
PCM P0457:00 EVAP System Leak Detected (fuel cap loose/off): No Sub Type Information Sets when the PCM detects a gross leak while the refueling flag is set and a loose fuel filler cap (if equipped) or an incorrectly sealed capless fuel tank filler pipe (if equipped) is suspected. On most vehicles, a message on the IPC displays to instruct the driver to check the fuel cap or capless fuel tank filler pipe (if equipped). The PCM continuously monitors the fuel level and retains the last updated value prior to the ignition being placed in the OFF mode. After the ignition is placed in the ON mode, a new fuel level is taken and compared to the level recorded at ignition OFF. If the fuel level has increased, a flag is set in the PCM indicating the vehicle was refueled. Check for a missing fuel filler cap or the integrity of the cap (if equipped). Verify the capless fuel tank filler pipe is sealed correctly (if equipped). Install and remove the supplemental fueling adapter five times in the capless fuel tank filler pipe to clear debris on the seal. Refer to the Owner's's Literature for the location of the supplemental fueling adapter in the vehicle. If OK, clear the continuous memory Diagnostic Trouble Codes (DTCs) and test the system for correct operation.
PCM P0460:00 Fuel Level Sensor "A" Circuit: No Sub Type Information Sets when the PCM detects the FLI signal does not change or does not correspond with the calculated fuel usage. The PCM calculates the amount of fuel used during operation. For vehicles with a dual container (saddle type) fuel tank, either fuel level sensor may set this DTC. Check with the customer for driving and fueling habits that would keep the fuel level at approximately the same value. Monitor the FLI PIDs while attempting to move the fuel level float by adding or removing fuel as necessary.
PCM P0461:00 Fuel Level Sensor "A" Circuit Range/Performance: No Sub Type Information Sets when the PCM detects the fuel level imput (FLI) signal repeatedly moves in and out of range, exceeding the minimum or maximum allowable calibrated parameters for a specified fuel fill percentage in the fuel tank. For vehicles with a dual container (saddle type) fuel tank, either fuel level sensor may set this DTC. Verify aftermarket equipment does not generate radio frequency interference or electromagnetic interference which may cause noisy fuel level input (FLI) input signal.
PCM P0462:00 Fuel Level Sensor "A" Circuit Low: No Sub Type Information Sets when the PCM detects the fuel level imput (FLI) signal is less than the minimum allowable calibrated parameter for a specified fuel fill percentage in the fuel tank. Monitor the FLI PIDs with the ignition ON, engine running. A concern is present if the FLI percentage PID is at 25% fill and the FLI voltage PIDs is less than 0.90 volt with a non-matching fuel gauge or the FLI percentage PIDs is at 75% fill and the FLI voltage PIDs is greater than 2.45 volts with a non-matching fuel gauge.
PCM P0463:00 Fuel Level Sensor "A" Circuit High: No Sub Type Information Sets when the PCM detects the fuel level imput (FLI) signal is greater than the maximum allowable calibrated parameter for a specified fuel fill percentage in the fuel tank. Monitor the FLI PIDs with the ignition ON, engine running. A concern is present if the FLI percentage PID is at 25% fill and the FLI voltage PIDs is less than 0.90 volt with a non-matching fuel gauge or the FLI percentage PIDs is at 75% fill and the FLI voltage PIDs is greater than 2.45 volts with a non-matching fuel gauge.
PCM P0496:00 EVAP System High Purge Flow: No Sub Type Information Sets when the PCM detects the EVAP running loss monitor detects excessive fuel tank vacuum with the engine running, but not at idle. Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, and EVAP canister vent hose assembly for contamination or debris. Check the EVAP purge valve for vacuum leak.
PCM P04EA:00 EVAP System Small Leak Detected - Fuel Tank Side: No Sub Type Information Sets when the PCM detects a fuel vapor leak from an opening as small as 1.016 mm (0.040 in) between the capless fuel filler pipe and the fuel tank isolation valve.
PCM P04EB:00 EVAP System Small Leak Detected - Fresh Air Side: No Sub Type Information Sets when the PCM detects a fuel vapor leak from an opening as small as 1.016 mm (0.040 in) between the EVAP leak detection control module and the fuel tank isolation valve.
PCM P04ED:00 EVAP System Large Leak Detected - Fresh Air Side: No Sub Type Information Sets when the PCM detects no purge flow, which is attributed to fuel vapor restrictions, a large fuel vapor leak, or multiple fuel vapor leaks are detected by the EVAP monitor. The EVAP system is monitored for no purge flow, the presence of a large fuel vapor leak, or multiple small fuel vapor leaks between the EVAP leak detection control module and the fuel tank isolation valve. Check for audible vacuum noise or significant fuel odor in the engine compartment or near the EVAP canister.
PCM P04EE:00 EVAP System Very Small Leak Detected - Fuel Tank Side: No Sub Type Information Sets when the PCM detects a fuel vapor leak from an opening as small as 0.508 mm (0.020 inch) is detected between the capless fuel filler pipe and the fuel tank isolation valve.
PCM P04EF:00 EVAP System Very Small Leak Detected - Fresh Air Side: No Sub Type Information Sets when the PCM detects a fuel vapor leak from an opening as small as 0.508 mm (0.020 inch) is detected between the EVAP leak detection control module and the fuel tank isolation valve.
PCM P04F0:00 EVAP System High Load Purge Line "A" Performance: No Sub Type Information Sets when the PCM detects the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (single path check valve), or when the fuel tank vacuum is less than a calibrated amount within a specified amount of time or when the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (dual path check valve). The EVAP check valve test is performed during minimal boost conditions, once per drive cycle, when entry conditions are met.
PCM P144A:00 EVAP System Purge Vapor Line Restricted/Blocked: No Sub Type Information Sets when the PCM detects the intrusive test confirms a restriction and the counter is incremented and the counter reaches a calibrated number of completions. The PCM monitors the EVAP system for a restricted fuel vapor tube between the fuel tank pressure sensor and the fuel tank. During the initial phase of the EVAP monitor, the PCM closes the canister vent and a vacuum develops in the fuel vapor tubes and lines and in the fuel tank. The PCM monitors the fuel tank pressure sensor to determine the amount of vacuum and how quickly the vacuum increases. The rate at which the vacuum increases is compared to an expected value. If the vacuum increases quicker than expected, a restricted fuel vapor tube is suspected and an intrusive test is carried out in the final phase of the EVAP monitor. Check the fuel vapor tube for a restriction between the FTP sensor and the fuel tank.
PCM P144B:00 EVAP System Secondary Purge Vapor Line Restricted/Blocked: No Sub Type Information Sets when the PCM detects the EVAP vent tube to the EVAP leak detection control module is restricted. Check for restrictions in the EVAP vent tube between the EVAP leak detection control module and the fresh air inlet. Inspect the connectors for signs of damage or corrosion.
PCM P144C:00 EVAP System Purge Flow Performance During Boost: No Sub Type Information Sets when the PCM detects the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (single path check valve), or when the fuel tank vacuum is less than a calibrated amount within a specified amount of time or when the fuel tank pressure exceeds a calibrated amount within a specified amount of time during the test (dual path check valve). The EVAP check valve test is carried out during minimal boost conditions, once per drive cycle, when entry conditions are met.
PCM P1450:00 Unable to Bleed Up Fuel Tank Vacuum: No Sub Type Information Sets when the PCM detects the EVAP running loss monitor detects excessive fuel tank vacuum with the engine running, but not at idle. Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, and EVAP canister vent hose assembly for contamination or debris. Check EVAP purge valve for vacuum leak.
PCM P2401:00 EVAP System Leak Detection Pump Control Circuit Low: No Sub Type Information Sets when the PCM detects a concern with the EVAP leak detection control module vacuum pump circuits.
PCM P2402:00 EVAP System Leak Detection Pump Control Circuit High: No Sub Type Information Sets when the PCM detects a concern is detected with the EVAP leak detection control module vacuum pump circuits.
PCM P2418:00 EVAP System Switching Valve "A" Control Circuit/Open: No Sub Type Information Sets when the PCM detects the signal moves outside the minimum or maximum limit for the commanded state of the EVAP vapor blocking valve.
PCM P2450:00 EVAP System Switching Valve "A" Perfomance/Stuck Open: No Sub Type Information Sets when the PCM detects the rate of vacuum loss is greater than a calibrated threshold. The PCM commands the EVAP vapor blocking valve closed while vacuum is present in the fuel tank. If the valve does not close, the vacuum in the tank is quickly lost. Retrieve all continuous memory and on-demand self-test Diagnostic Trouble Codes (DTCs) from the PCM. Diagnose any circuit related EVAP vapor blocking valve Diagnostic Trouble Codes (DTCs) before diagnosing this performance DTC. Visually inspect the EVAP canister inlet port, EVAP canister vent valve filter, fresh air hose and canister vent hose assembly for restrictions, contamination or debris.
PCM P2451:00 EVAP System Switching Valve "A" Stuck Closed: No Sub Type Information Sets when the PCM detects the rate of loss is less than a calibrated threshold. The PCM commands the fuel tank isolation valve open while a vacuum is present in the fuel tank. If the fuel tank isolation valve does not open, the vacuum in the tank remains. Retrieve all continuous memory and on-demand self-test Diagnostic Trouble Codes (DTCs) from the PCM. Diagnose and repair circuit DTC P2418 or any fuel tank pressure (FTP) sensor concerns before diagnosing this performance DTC.
PCM P24B9:00 EVAP System Leak Detection Pump Pressure Sensor Circuit Range/Performance: No Sub Type Information Sets when the PCM detects the EVAP leak detection control module pressure sensor signal is out of range.
PCM P24BA:00 EVAP System Leak Detection Pump Pressure Sensor Circuit Low: No Sub Type Information Sets when the PCM detects the EVAP leak detection control module pressure sensor signal is less than a minimum allowable calibrated parameter.
PCM P24BB:00 EVAP System Leak Detection Pump Pressure Sensor Circuit High: No Sub Type Information Sets when the PCM detects the EVAP leak detection control module pressure sensor signal is greater than a maximum allowable calibrated parameter.
PCM P24BC:00 EVAP System Leak Detection Pump Pressure Sensor Circuit Intermittent: No Sub Type Information Sets when the PCM detects an intermittent concern with the EVAP leak detection control module pressure sensor circuits.
PCM P24BE:00 EVAP System Leak Detection Pump Switching Valve Control Circuit Low: No Sub Type Information Sets when the PCM detects a concern with the EVAP leak detection control module switching valve circuits.
PCM P24BF:00 EVAP System Leak Detection Pump Switching Valve Control Circuit High: No Sub Type Information Sets when the PCM detects a concern with the EVAP leak detection control module switching valve circuits.
PCM P24C0:00 EVAP System Leak Detection Pump Switching Valve Stuck On: No Sub Type Information Sets when the PCM detects the EVAP leak detection control module switching valve is stuck closed.
PCM P24C1:00 EVAP System Leak Detection Pump Switching Valve Performance/Stuck Off: No Sub Type Information Sets when the PCM detects the EVAP leak detection control module switching valve is stuck open.
PCM P2DDA:00 EVAP System Leak Detection Pump Performance/Stuck Off: No Sub Type Information Sets when a concern is detected with the EVAP leak detection control module vacuum pump circuits.
PCM P2DDB:00 EVAP System Leak Detection Pump Stuck On: No Sub Type Information Sets when a concern is detected with the EVAP leak detection control module vacuum pump circuits.
PCM P260F:00 EVAP System Monitoring Processor Performance: No Sub Type Information Sets when the PCM detects a concern internal to the PCM. The microprocessor that controls the engine off natural vacuum leak check monitor is separate from the main processor within the PCM. Verify the PCM is at the latest calibration level. Reprogram if necessary.

Possible Sources

  • Fuel tank pressure sensor sensor circuitry concern
  • EVAP component circuitry concern
  • EVAP check valve
  • EVAP vapor blocking valve
  • Fuel tank isolation valve
  • Fuel vapor tube
  • Fuel pump (FP) module concern
  • EVAP canister vent valve (9F945)
  • Fuel filler cap (9030)
  • Capless fuel tank filler pipe (9034)
  • Fuel tank pressure sensor (9C052)
  • EVAP purge valve (9C915)
  • PCM calibration
  • PCM (12A650)
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