Code result

P2179

System Too Lean Off Idle Bank 2

Moderate severity

What it means

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.

Is it safe to drive?

Use caution

The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical.

Most likely causes

  • Vacuum leak on bank 2

    high

    One of the most commonly reported causes for this code — check this first.

  • Low fuel pressure

    medium

    A plausible cause — test and verify before replacing parts.

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