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1997 GMC SUBURBAN
6.5L V8 Diesel•RWD•diesel•turbo
3 active safety recalls on this vehicle — view recalls
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Repairs0Labor506Torque130Fluid8DTC1605Battery1Maintenance0Recalls3
P0286moderate severityPowertrain

Cylinder 9 Injector Circuit Low

on 1997 GMC Suburban 6.5L V8 Diesel · RWD

What this code means

The PCM detected a low voltage or open condition in the fuel injector control circuit for cylinder 9. The injector may not be receiving proper drive.

Symptoms

  • Engine misfire
  • Rough running
  • Loss of power

Common causes

  • Faulty fuel injector
  • Open injector circuit wiring
  • Corroded connector
  • Failed injector driver in PCM

Diagnostic steps

  1. Scan for injector codes
  2. Inspect cylinder 9 wiring and connector
  3. Measure injector coil resistance
  4. Check PCM driver signal
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