P2628

O2 Sensor Pumping Current Trim Circuit High Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Unstable engine idling
Reduced engine power
Increased emissions of harmful substances

Causes

Oxygen sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Problems with the ECU
Oxygen sensor dirty

How to Fix

Check the condition of the oxygen sensor
Inspect the wiring harness and connectors for damage
Check the voltage and resistance in the sensor circuit
Clean or replace the oxygen sensor if necessary
Reset the error code and check if it returns

Related codes

P2626 P2627 P2629