P1051
Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2
P1051 is an OBD-II diagnostic trouble code meaning: Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2. Common causes: afr sensor heater malfunction, open or short circuit in the heater circuit. Estimated repair cost: $33–89.
Symptoms
- Check Engine light comes on
- Deteriorating fuel economy
- Unstable engine idling
- Reduced engine power
- Dips during acceleration
Causes
- AFR sensor heater malfunction
- Open or short circuit in the heater circuit
- Poor contact in sensor connectors
- Faulty relay or fuse
- Problems with the engine control module (ECM)
How to Fix
- Check the continuity of the sensor heater circuit
- Check the voltage at the sensor connectors
- Inspect connectors and wires for damage
- Replace the air-fuel ratio sensor if necessary
- Check and replace fuses and relays if necessary
Related codes
Error P1051 by Vehicle Brand
FAQ
What does the P1051 code mean?
P1051 is an OBD-II diagnostic trouble code that indicates: Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2
What causes a P1051 error code?
The most common causes of P1051 include: AFR sensor heater malfunction; Open or short circuit in the heater circuit; Poor contact in sensor connectors; Faulty relay or fuse.
How do I fix a P1051 diagnostic trouble code?
To fix P1051: Check the continuity of the sensor heater circuit. Check the voltage at the sensor connectors. Inspect connectors and wires for damage. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1051?
Yes, but get it checked soon
How much does it cost to fix P1051?
The estimated repair cost for P1051 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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