P0157 Honda Code - O2 Sensor Circuit Low Voltage Bank 2 Sensor 2
Quick Answer
The heated oxygen sensor 2 (HO2S), after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- P0157 Honda indicates O2 Sensor Circuit Low Voltage Bank 2 Sensor 2.
- Common causes
- Common causes include Faulty Rear Heated Oxygen Sensor Bank 2, Rear Heated Oxygen Sensor Bank 2 harness is open or shorted, Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code P0157 Honda Description
What are the Possible Causes of the DTC P0157 Honda?
- Faulty Rear Heated Oxygen Sensor Bank 2
- Rear Heated Oxygen Sensor Bank 2 harness is open or shorted
- Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks
How to Fix the DTC P0157 Honda?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0157 Honda code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0157 Honda Code
1. What is the meaning of OBDII code P0157 on a Honda?
The OBDII code P0157 on a Honda indicates an issue with the O2 Sensor Circuit Low Voltage for Bank 2 Sensor 2.
2. What are the common symptoms of a P0157 code on a Honda?
Common symptoms of a P0157 code on a Honda may include poor fuel economy, engine misfires, rough idling, and the illumination of the Check Engine Light.
3. What can cause the P0157 OBDII code to trigger on a Honda?
The P0157 code on a Honda is often triggered by a faulty O2 sensor, damaged wiring or connectors, exhaust leaks, or issues with the engine's fuel system.
4. How can I diagnose a P0157 code on my Honda?
To diagnose a P0157 code on a Honda, you can use an OBDII scanner to read the code and then inspect the O2 sensor, wiring, and connectors for any visible damage or issues.
5. How can I repair a P0157 code on my Honda?
To repair a P0157 code on a Honda, you may need to replace the Bank 2 Sensor 2 O2 sensor, repair any damaged wiring or connectors, fix exhaust leaks, or address any fuel system problems.
6. Can I drive my Honda with a P0157 OBDII code?
It is not recommended to drive your Honda with a P0157 OBDII code, as it can lead to poor engine performance and potentially cause damage to other components over time.
7. How much does it cost to fix a P0157 code on a Honda?
The cost to fix a P0157 code on a Honda can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.
8. How often should the O2 sensors be replaced on a Honda to prevent P0157 codes?
O2 sensors on a Honda should typically be replaced every 60,000 to 90,000 miles to prevent issues like the P0157 code from occurring.
9. Can a P0157 OBDII code affect the emissions of my Honda?
Yes, a P0157 OBDII code on a Honda can affect the emissions output of the vehicle, potentially causing it to fail emissions tests and contribute to higher levels of pollution.
10. Is it possible to reset the Check Engine Light after fixing a P0157 code on a Honda?
Yes, after fixing the issue causing the P0157 code on a Honda, you can reset the Check Engine Light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.
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