P2235

O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 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
Reduced engine power
Unstable engine operation at idle
Dips during acceleration

Causes

Damage to the oxygen sensor wiring harness
Short circuit in the sensor heating circuit
Malfunction of the oxygen sensor itself
Corrosion or oxidation of contacts
Damage to wire insulation

How to Fix

Check the integrity of the sensor wiring harness
Check the resistance of the sensor heating circuit
Inspect contacts for corrosion
Replace the oxygen sensor if necessary
Eliminate possible short circuits in the wiring

Related codes

P2236 P2237 P2238