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Home >> Mazda >> 2014 >> MX-5 Miata Club, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> System >> On-Board Diagnostic [Engine Control System LF] >> DTC P0461

DTC P0461

DTC P0461  Fuel gauge sender unit range/performance problem 
DETECTION CONDITION 
  • The PCM monitors the fuel tank level difference before and after the PCM-calculated fuel consumption has reached more than 25 L {26.4 US qt, 22 Imp qt}  . If the difference is less than 5%, the PCM determines that there is a fuel gauge sender unit range/performance problem.

Diagnostic support note 
  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Fuel gauge sender unit malfunction
  • Instrument cluster malfunction
  • PCM malfunction
DIAGNOSTIC PROCEDURE

STEP INSPECTION ACTION
1 VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED 
  • Has the FREEZE FRAME DATA (Mode 12) been recorded?
Yes Go to the next step.
No Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2 VERIFY RELATED SERVICE BULLETINS AVAILABILITY 
  • Verify related Service Bulletins availability.
  • Is any related Service Bulletins available?
Yes Perform the repair or diagnosis according to the available Service Bulletins.
  • If the vehicle is not repaired, go to the next step.
No Go to the next step.
3 INSPECT FUEL GAUGE SENDER UNIT 
Yes Replace the fuel gauge sender unit, then go to Step 5.
(See FUEL PUMP UNIT DISASSEMBLY/ASSEMBLY ).
No Go to the next step.
4 INSPECT INSTRUMENT CLUSTER 
Yes Replace the instrument duster, then go to the next step.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION ).
No Go to the next step.
5 VERIFY TROUBLESHOOTING OF DTC P0461 COMPLETED 
  • Clear the DTC from the PCM memory using the M-MDS.
  • Start the engine.
  • Drive the vehicle under the FREEZE FRAME DATA (Mode 2) condition.
  • Is the PENDING CODE for this DTC present?
Yes Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION ).
No Go to the next step.
6 VERIFY AFTER REPAIR PROCEDURE 
Yes Go to the applicable DTC inspection.
(See DTC TABLE ).
No DTC troubleshooting completed.