P237B
O2 Sensor Exhaust Sample Error Bank 2 Sensor 2
P237B is an OBD-II diagnostic trouble code meaning: O2 Sensor Exhaust Sample Error Bank 2 Sensor 2. Common causes: bank 2 sensor 2 oxygen sensor malfunction, open or short circuit in sensor wiring. Estimated repair cost: $17–89.
Symptoms
- Check Engine light comes on
- Possible increase in fuel consumption
- Minor loss of engine power
- Possible unstable idle speed
- Dips during acceleration
Causes
- Bank 2 Sensor 2 oxygen sensor malfunction
- Open or short circuit in sensor wiring
- Sensor contamination with combustion products
- Exhaust system leaking
- Problems with the catalytic converter
How to Fix
- Check the integrity of the wiring to the sensor
- Inspect the sensor for damage and dirt
- Check the exhaust system for leaks
- Check the performance of the catalytic converter
- If necessary, replace the oxygen sensor
Related codes
Error P237B by Vehicle Brand
FAQ
What does the P237B code mean?
P237B is an OBD-II diagnostic trouble code that indicates: O2 Sensor Exhaust Sample Error Bank 2 Sensor 2
What causes a P237B error code?
The most common causes of P237B include: Bank 2 Sensor 2 oxygen sensor malfunction; Open or short circuit in sensor wiring; Sensor contamination with combustion products; Exhaust system leaking.
How do I fix a P237B diagnostic trouble code?
To fix P237B: Check the integrity of the wiring to the sensor. Inspect the sensor for damage and dirt. Check the exhaust system for leaks. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P237B?
Yes, but get it checked soon
How much does it cost to fix P237B?
The estimated repair cost for P237B is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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