System Too Lean Off Idle Bank 2
Fuel trims on bank 2 show a lean deviation during off-idle operating conditions. Causes are similar to bank 1 but isolated to the second cylinder bank.
Affected components
- Intake manifold
- Vacuum hoses
- Fuel injector
- Mass air flow sensor
Common causes
- High likelihood: Vacuum leak on bank 2
- Medium likelihood: Low fuel pressure
Possible symptoms
- Check engine light on
- Rough idle, possible stalling
- Hesitation or hard cold start
- Power loss under load
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
- A drive cycle may be required after repair
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.