2008 Chevrolet Malibu Hybrid – Raw Fuel Smell and Surge With P0171
- Aug 15
- 1 min read
Updated: Aug 15
CUSTOMER CONCERN
Customer states the malfunction indicator light is on, the engine surges at idle and raw fuel odor is present. DTC P0171 is stored.
CAUSE
Testing with the front oxygen sensor isolated confirmed an exhaust leak from a cracked exhaust manifold was altering fuel-control feedback.
CORRECTION
Remove and replace exhaust manifold. Repair exhaust leaks, clear DTC P0171 and verify stable idle operation.
