Diagnostic Code Index

2008 Pontiac Grand Prix BaseSECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX

DTC Description
DTC B3626  Traction Control Preference Switch Circuit
DTC C0035-C0051  Wheel Speed Sensor Circuit
DTC C0110  Pump Motor Circuit Malfunction
DTC C0121  Valve Relay Circuit Malfunction
DTC C0161  ABS/TCS Brake Switch Circuit Malfunction
DTC C0191  Four Wheel Drive Reference Accelerometer Circuit
DTC C0192  Four Wheel Drive Reference Accelerometer Circuit Performance
DTC C0245  Wheel Speed Sensor Frequency Error
DTC C0550  ECU Malfunction
DTC C0896  Device Voltage Range Performance
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.