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DTC P0454:00 [PCM (SKYACTIV-G 2.0)]

DTC P0454:00

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.

    Diagnostic support note

  • This is a continuous monitor (CCM).

  • The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.

  • FREEZE FRAME DATA/Snapshot data is available.

  • DTC is stored in the PCM memory.

FAIL-SAFE FUNCTION

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
Diagnostic Procedure

STEP

INSPECTION

ACTION

1

 RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION

NOTE:

  • Recording can be facilitated using the screen capture function of the PC.

  • Record the FREEZE FRAME DATA/snapshot data on the repair order.

—

Go to the next step.

2

 VERIFY RELATED REPAIR INFORMATION AVAILABILITY

  • Verify related Service Bulletins and/or on-line repair information availability.

  • Is any related repair information available?

Yes

Perform repair or diagnosis according to the available repair information.

  • If the vehicle is not repaired, go to the next step.

No

Go to the next step.

3

 VERIFY RELATED PENDING CODE AND/OR DTC

Yes

Go to the applicable PENDING CODE or DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

Go to the next step.

4

 INSPECT FUEL TANK PRESSURE SENSOR

Yes

Replace the charcoal canister, then go to the next step.

(See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Intermittent concern exists.

5

 VERIFY DTC TROUBLESHOOTING COMPLETED

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

No

Go to the next step.

6

 VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [PCM (SKYACTIV-G 2.0)].)

No

DTC troubleshooting completed.
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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