Error code
OBD2 P2179
OBD2P2179
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
System Too Lean Off Idle.
Severity
moderateCan drive, but performance and fuel efficiency may be affected.
Summary
P2179 indicates that the engine is running too lean (not enough fuel) after it has been idling, specifically affecting bank 2 of the engine.
Common Causes
- Fuel pressure issues
- Faulty injectors
- Intake air leak
- Wiring or electrical faults in the heated oxygen sensor (H02S) circuit
Fixes
FAQ
What does P2179 mean?
P2179 indicates a lean air-fuel mixture issue in bank 2 of the engine after idling, often related to problems with the heated oxygen sensor (H02S).
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
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- P2104Throttle Actuator Control System - Forced Idle
- P2105Throttle Actuator Control System - Forced Engine Shutdown
- P2106Throttle Actuator Control System - Forced Limited Power
- P2107Throttle Actuator Control Module Processor
- P2108Throttle Actuator Control Module Performance
- P2109Throttle/Pedal Position Sensor 'A' Minimum Stop Performance
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- P2111Throttle Actuator Control System - Stuck Open