Diagnostic Trouble Code (DTC) Information

ECM-P017100 System Too Lean (Bank 1)


Condition
Engine Control Module (ECM) receives information from the heated oxygen sensor about fuel/air mixture in different load areas. If Engine Control Module (ECM) registers that fuel/air mixture deviates too much from target lambda, so that adaptations for bank 1 end up in any of its end-positions, the diagnostic trouble code is generated.

Substitute Value
- Nothing.

Possible Source
- Air leakage intake manifold.
- Air leakage, exhaust pipe.
- Low fuel pressure.
- Damaged mass air flow sensor.

Fault Symptom[s]
- Malfunction indicator lamp (MIL) lit.
- Poor performance.
- Engine misfires.
- High idle rpm.