P22B7

O2 Sensor Pumping Current Trim Circuit High Bank 1 Sensor 2

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 operation
Reduced engine power
Increased emissions of harmful substances

Causes

Oxygen sensor malfunction (bank 1, sensor 2)
Damaged or corroded wiring
Poor contact in connectors
Problems with the engine ECU
Short circuit in the pump control circuit

How to Fix

Check the condition of the oxygen sensor
Inspect wiring and connectors for damage
Check resistance and continuity
If necessary, replace the oxygen sensor
Test the operation of the ECU

Related codes

P22B8 P22B6 P2237