P102D
O2 Sensor Heater Circuit Performance Bank 1 Sensor 2 Stuck ON
P102D is an OBD-II diagnostic trouble code meaning: O2 Sensor Heater Circuit Performance Bank 1 Sensor 2 Stuck ON. Common causes: oxygen sensor malfunction, short circuit in the heater circuit. Estimated repair cost: $17–67.
Symptoms
- Check Engine Light Is On
- Increased fuel consumption
- Unstable engine operation at idle
- Reduced engine power
- Possible burning smell from an overheated sensor
Causes
- Oxygen sensor malfunction
- Short circuit in the heater circuit
- Problems with the heater circuit relay or fuse
- Malfunction of the engine control unit (ECU)
- Damaged wiring or poor contact in the sensor connector
How to Fix
- Check the condition of the oxygen sensor and its connector
- Check heater circuit for short circuit
- Check fuses and relays associated with the heater circuit
- If necessary, replace the oxygen sensor
- Check and, if necessary, update the ECU firmware
Related codes
FAQ
What does the P102D code mean?
P102D is an OBD-II diagnostic trouble code that indicates: O2 Sensor Heater Circuit Performance Bank 1 Sensor 2 Stuck ON
What causes a P102D error code?
The most common causes of P102D include: Oxygen sensor malfunction; Short circuit in the heater circuit; Problems with the heater circuit relay or fuse; Malfunction of the engine control unit (ECU).
How do I fix a P102D diagnostic trouble code?
To fix P102D: Check the condition of the oxygen sensor and its connector. Check heater circuit for short circuit. Check fuses and relays associated with the heater circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P102D?
Yes, but get it checked soon
How much does it cost to fix P102D?
The estimated repair cost for P102D is $17–67. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat