P2B88

Intake Air O2 Sensor Circuit 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 in acceleration dynamics
Increased fuel consumption
Unstable engine operation at idle
Possible misfires

Causes

Intake air oxygen sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Sensor contamination
Problems with the engine control unit

How to Fix

Check the integrity of the sensor wires and connectors
Check the resistance and voltage in the sensor circuit
Clean or replace the oxygen sensor
Check the operation of the engine control unit
Reset the error code and check for its reappearance

Related codes

P2B89 P2B8A P2B8B