P0157
O2 Sensor Circuit Low Voltage Bank 2 Sensor 2
P0157 is an OBD-II diagnostic trouble code meaning: O2 Sensor Circuit Low Voltage Bank 2 Sensor 2. Common causes: malfunction of the oxygen sensor (lambda probe), open or short circuit in wiring harness. Estimated repair cost: $56–167.
Symptoms
- Increased fuel consumption
- Unstable engine operation
- Check Engine Light Is On
- Reduced engine power
Causes
- Malfunction of the oxygen sensor (lambda probe)
- Open or short circuit in wiring harness
- Poor connection or corrosion in connectors
- Problems with power or grounding of the circuit
- ECU malfunction
How to Fix
- Check the condition of the oxygen sensor and its connectors
- Check wiring harness for damage
- Check the voltage and resistance in the sensor circuit
- Replace the oxygen sensor if necessary
- Clean or replace connectors if corroded
- Check and, if necessary, replace the computer
Related codes
Error P0157 by Vehicle Brand
FAQ
What does the P0157 code mean?
P0157 is an OBD-II diagnostic trouble code that indicates: O2 Sensor Circuit Low Voltage Bank 2 Sensor 2
What causes a P0157 error code?
The most common causes of P0157 include: Malfunction of the oxygen sensor (lambda probe); Open or short circuit in wiring harness; Poor connection or corrosion in connectors; Problems with power or grounding of the circuit.
How do I fix a P0157 diagnostic trouble code?
To fix P0157: Check the condition of the oxygen sensor and its connectors. Check wiring harness for damage. Check the voltage and resistance in the sensor circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0157?
Limited driving only, diagnose soon
How much does it cost to fix P0157?
The estimated repair cost for P0157 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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