P2626

O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–89 (est.)

Symptoms

Check Engine light comes on
Increased fuel consumption
Unstable engine idling
Reduced engine power
Dips during acceleration

Causes

Bank 1 Sensor 1 Oxygen Sensor Malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Malfunction of the engine control unit (rare)

How to Fix

Check the continuity of the oxygen sensor circuit
Inspect the sensor connector and contacts
Check resistance and sensor signal
Replace a faulty oxygen sensor
Check operation after repair

Related codes

P0130 P0131 P0132 P0133