P2231

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

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

Causes

Damage to the oxygen sensor wiring harness
Short circuit in the sensor heating circuit
Oxygen sensor malfunction
Damage to wire insulation
Contact corrosion

How to Fix

Check the integrity of the oxygen sensor wiring harness
Check the resistance of the sensor heating circuit
Replace the oxygen sensor if necessary
Eliminate short circuit in wiring
Clean contacts from corrosion

Related codes

P2230 P2232 P0130