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2006 MAZDA MPV
3.0L V6•FWD•AUTOMATIC•gas
2 active safety recalls on this vehicle — view recalls
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Repairs0Labor486Torque3100Fluid7DTC1789Battery1Maintenance0Recalls2
P0278moderate severityPowertrain

Cylinder 8 Injector Circuit Low

on 2006 Mazda MPV 3.0L V6 · FWD

What this code means

The PCM detected a low voltage condition in the cylinder 8 injector circuit. This usually points to a short or open in the injector wiring or a failed injector.

Symptoms

  • Misfire on cylinder 8
  • Rough running
  • Check engine light on

Common causes

  • Shorted injector circuit wiring
  • Faulty fuel injector
  • Corroded or loose connector
  • PCM driver fault

Diagnostic steps

  1. Retrieve codes and freeze frame data
  2. Inspect cylinder 8 injector connector and wiring
  3. Measure injector resistance
  4. Replace injector or repair circuit as needed
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Other Powertrain codes on this vehicle

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