P2AE4

Intake Air O2 Sensor Pumping Current Circuit Low Bank 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Unstable engine operation at idle
Increased fuel consumption
Reduced engine power
Check Engine Light Illuminates
Dips during acceleration

Causes

Malfunction of the oxygen sensor in the intake tract
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with power or grounding of the circuit
Mechanical damage to the sensor

How to Fix

Check the integrity of the sensor wiring and connectors
Measure the resistance and voltage in the sensor circuit
Clean sensor connector contacts
Replace the oxygen sensor if necessary
Check the operation of the system after repair

Related codes

P2AE3 P2AE5 P0135