P1031 Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1
Quick Answer
The Engine Control Module (ECM) performs ON/OFF duty control of the Air Fuel Ratio (A/F) sensor 1 heater corresponding to the engine operating condition to keep the temperature of A/F sensor 1 element at the specified range. Common causes include Faulty Air Fuel Ratio Sensor 1 Bank 1, Air Fuel Ratio Sensor 1 harness is open or shorted, Air Fuel Ratio Sensor 1 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1031 indicates Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1.
- Common causes
- Common causes include Faulty Air Fuel Ratio Sensor 1 Bank 1, Air Fuel Ratio Sensor 1 harness is open or shorted, Air Fuel Ratio Sensor 1 circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1031 Description
What are the Possible Causes of the DTC P1031?
- Faulty Air Fuel Ratio Sensor 1 Bank 1
- Air Fuel Ratio Sensor 1 harness is open or shorted
- Air Fuel Ratio Sensor 1 circuit poor electrical connection
How to Fix the DTC P1031?
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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1031 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.
Need more information about the P1031 code?
Need more information on how to fix the P1031 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1031 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1031 Audi — Intake Manifold Air Control Valve Position Sensor Specification Not Attained
- P1031 Buick — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Cadillac — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Chevrolet — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Chrysler — Cylinder 1 Oil Supply Solenoid Valve Driver Voltage Implausible
- P1031 Dodge — Cylinder 1 Oil Supply Solenoid Valve Driver Voltage Implausible
- P1031 Fiat — Cylinder 1 Oil Supply Solenoid Valve Driver Voltage Implausible
- P1031 GMC — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Infiniti — Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1
- P1031 Jeep — Cylinder 1 Oil Supply Solenoid Valve Driver Voltage Implausible
- P1031 Mercedes-Benz — Heated Oxygen Sensor Malfunction
- P1031 Nissan — Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1
- P1031 Oldsmobile — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Pontiac — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Saab — Injector 3 Low Output
- P1031 Saturn — HO2S Heater Current Monitor Control Circuit Banks 1 And 2 Sensor 1
- P1031 Volkswagen — Intake Manifold Air Control Valve Position Sensor Specification Not Attained
Frequently Asked Questions about P1031 Code
1. What are the common symptoms of OBDII code P1031 (Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1)?
- Common symptoms include decreased fuel efficiency, rough idling, hesitation during acceleration, and an illuminated check engine light.
2. What are the potential causes of OBDII code P1031?
- The code P1031 can be caused by a faulty air fuel ratio sensor, damaged wiring or connectors in the sensor circuit, or a malfunctioning sensor heater control circuit.
3. How can I diagnose the cause of OBDII code P1031?
- Use a scan tool to read the trouble codes and perform a visual inspection of the sensor and its connectors. Test the sensor's resistance and check for wiring continuity to pinpoint the issue.
4. Can I drive my vehicle with OBDII code P1031?
- It is generally safe to drive with this code, but it is recommended to address the issue promptly to avoid potential damage to the vehicle's engine components.
5. What is the purpose of the air fuel ratio sensor in the vehicle?
- The air fuel ratio sensor measures the oxygen content in the exhaust gases and helps the engine control unit adjust the air-fuel mixture for optimal combustion efficiency.
6. How can I repair OBDII code P1031?
- Repair options include replacing the faulty air fuel ratio sensor, repairing damaged wiring or connectors, or addressing issues with the sensor heater control circuit.
7. Can a DIY enthusiast fix OBDII code P1031 at home?
- Depending on your skill level and access to tools, it may be possible to address this code at home by following repair guides and utilizing diagnostic equipment.
8. How much does it cost to repair OBDII code P1031 at a mechanic?
- The cost of repairing this code can vary depending on the exact cause of the issue and the labor rates of the mechanic. It is advisable to get multiple quotes for comparison.
9. Will resetting the check engine light make OBDII code P1031 go away?
- Resetting the check engine light will temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return after driving the vehicle for some time.
10. How can I prevent OBDII code P1031 from recurring in the future?
- To prevent the code from recurring, ensure regular maintenance of the air fuel ratio sensor, inspect wiring and connectors for damage, and address any issues promptly to maintain optimal engine performance.
Discuss the causes and fixes for P1031 OBDII Code
Code P1031 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
