P00D3

HO2S Heater Control Circuit Range/Performance Bank 2 Sensor 1

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation
Check Engine light comes on
Reduced engine power

Causes

Oxygen sensor malfunction (bank 2, sensor 1)
Open or short circuit in wiring harness
Poor contact in the sensor connector
Faulty heating circuit relay or fuse
Problems with the ECU

How to Fix

Check the integrity of the wiring harness and sensor connector
Measure the resistance of the sensor heater
Check the voltage on the heating circuit
Replace the oxygen sensor if necessary
Check and replace relays or fuses

Related codes

P0030 P0031 P0032 P0053