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DTC P0461 - Fuel Level Sensor Circuit Performance

NOTE: If DTC P0461 and P0463 are set together, diagnose DTC P0463 first.
  1. Turn ignition on. Using a voltmeter, measure voltage (backprobe) between ground and PCM harness connector "A", terminal No. 3 (Yellow/Red wire). See Figure . Note reading. Add one gallon (3.8L) of fuel to tank. If voltage reading decreases, go to next step. If voltage reading increases, go to step 3).
  2. Check for an intermittent problem. See TESTS W/O CODES article. Repair as necessary. Retest system.
  3. If reading is 0-1 volt, ensure fuel tank is neither full or empty. Adjust if necessary and go to next step. If reading is not as specified, replace fuel level sensor. Retest system.
  4. Observe fuel gauge. If gauge reads EMPTY, repair open Yellow/Red wire between fuel gauge and PCM. If gauge reads actual fuel level, repair open Yellow/Red wire or poor connection at PCM. If gauge reads FULL, go to next step.
  5. Disconnect fuel gauge harness connector. If fuel gauge reading drops to empty, replace fuel level sensor. If fuel gauge reading does not change, check Yellow/Red wire for short to ground. Repair as necessary. If wire is okay, replace fuel level gauge. Retest system.
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