P1168
Closed Loop Control Function Bank 2
Severity
⚠️ MediumCan you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Increased fuel consumption
- Unstable engine operation at idle
- Reduced engine power
- Check Engine light comes on
- Increased emissions of harmful substances
Causes
- Bank 2 oxygen sensor malfunction
- Vacuum leaks in the intake system
- Problems with fuel injectors
- Malfunction of the fuel pump or pressure regulator
- Damage to wiring or sensor connectors
How to Fix
- Check the condition and operation of bank 2 oxygen sensors
- Examine the system for vacuum leaks
- Check the operation of the fuel injectors and the pressure in the system
- Inspect the wiring harness and sensor connectors
- If necessary, replace faulty components