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DTC Detection Logic

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION AND POSSIBLE CAUSE REFERENCE

DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0078 Exhaust valve timing control magnet retarder (bank 1) circuit An improper voltage is sent to the ECM through exhaust valve timing control magnet retarder.
  • Harness or connectors

    (Exhaust valve timing control magnet retarder circuit is open or shorted.)

  • Exhaust valve timing control magnet retarder
P0084 Exhaust valve timing control magnet retarder (bank 2) circuit
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