P2B8C

Intake Air O2 Sensor Heater Control Circuit Range/Performance Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Deterioration of vehicle dynamics
Increased fuel consumption
Unstable engine operation at idle
Possible misfires

Causes

Oxygen sensor heating element malfunction
Open or short circuit in control circuit
Problems with the sensor connector
Faulty heating circuit relay or fuse
Problems with the engine control unit

How to Fix

Check the condition of the oxygen sensor in the intake
Check the integrity of the heater control circuit
Inspect connectors and contacts for corrosion
Check heating circuit fuses and relays
If necessary, replace the oxygen sensor

Related codes

P2B8D P2B8B P0135