Chevrolet Impala Trouble Codes, Symptoms & Recalls
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Common check engine codes on the Chevrolet Impala
- P0420 — Catalyst System Efficiency Below Threshold (Bank 1)
- P0300 — Random/Multiple Cylinder Misfire Detected
- P0171 — System Too Lean (Bank 1)
- P0442 — Evaporative Emission System Small Leak Detected
- P0455 — Evaporative Emission System Large Leak Detected
- P0128 — Coolant Temperature Below Thermostat Regulating Temperature
- P0401 — EGR Insufficient Flow Detected
- P0440 — Evaporative Emission Control System Malfunction
- P0301 — Cylinder 1 Misfire Detected
- P0174 — System Too Lean (Bank 2)
Common Chevrolet Impala symptoms
- Chevrolet Impala car shaking when braking
- Chevrolet Impala brakes squealing when stopping
- Chevrolet Impala check engine light on
- Chevrolet Impala car won't start
- Chevrolet Impala car overheating
- Chevrolet Impala car loses power when accelerating
- Chevrolet Impala car running or idling rough
- Chevrolet Impala white smoke from exhaust
- Chevrolet Impala blue smoke from exhaust
- Chevrolet Impala battery light on while driving
- Chevrolet Impala car pulls to one side
- Chevrolet Impala car ac not blowing cold
Maintenance & recalls
Chevrolet Impala maintenance resources · Chevrolet Impala NHTSA recalls & complaints