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DTC P0454:00 [PCM (SKYACTIV-G)]

DTC P0454:00 [PCM (SKYACTIV-G)]

SM2334439

id0102t4301000



Outline

System malfunction location

Fuel tank pressure sensor intermittent malfunction
Detection condition
• Any one of the following conditions is met:
― The difference between the currently detected fuel tank pressure sensor input voltage and the previously detected input voltage is large.
― The input voltage of the fuel tank pressure sensor remains low or high.
Fail-safe
• Not applicable
Possible cause
• Wiring harness malfunction between PCM and fuel tank pressure sensor
• Fuel tank pressure sensor malfunction
― Intermittent open or short circuit in the fuel tank pressure sensor or fuel tank pressure sensor signal
• PCM malfunction
System wiring diagram
• Not applicable
Connector diagram
• Not applicable



Diagnostic Procedure

Step

Inspection

Results

Action
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data.

Note
• Recording can be facilitated using the screen capture function of the PC.
—
Go to the next step.
2
VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
Yes
Perform repair or diagnosis according to the available information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
INSPECT FOR OTHER RELATED DTCs
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-G (US))].)
No
Go to the next step.
4
INSPECT FUEL TANK PRESSURE SENSOR FOR MALFUNCTION
• Inspect the applicable part. (See FUEL TANK PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See FUEL TANK PRESSURE SENSOR INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
• Is the part normal?
Yes
Intermittent concern exists.
• Perform the “Action for Non-repeatable Malfunction” procedure. (See TROUBLESHOOTING PROCEDURE [(US)].)
No
Repair or replace the malfunctioning location and perform the repair completion verification.
(See PRESSURE CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].)
(See PRESSURE CONTROL VALVE REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
Repair completion verification 1
VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory. (See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
― Perform the KOER self test. (See DTC INSPECTION.)
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Is the same Pending DTC present?
Yes
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)].)
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (US))].) (See PCM REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
No
Go to the next step.
Repair completion verification 2
VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection. (See DTC INSPECTION.)
• Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.