P1031 Infiniti 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 Infiniti 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 Infiniti Description
What are the Possible Causes of the DTC P1031 Infiniti?
- 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 Infiniti?
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
2004-2005 Infiniti FX35 2WD
2004-2005 Infiniti FX35 4WD
2004-2005 Infiniti G35 Sedan 2WD
2004-2005 Infiniti G35 Sedan 4WD
Infiniti Factory Service Bulletin OBDII Code P1031
The bulletin suggests reprogramming the Engine Control Module (ECM) first before replacing any parts.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1031 Infiniti 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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Information for Specific Infiniti Models
- P1031 2004 Infiniti G35 — Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1
- P1031 2005 Infiniti G35 — Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1
Frequently Asked Questions about P1031 Infiniti Code
1. What are the common symptoms of OBDII code P1031 on an Infiniti related to the Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1?
- Common symptoms include poor fuel economy, rough idling, engine misfires, and an illuminated check engine light.
2. What are the possible causes of OBDII code P1031 on an Infiniti?
- The code P1031 can be triggered by a faulty air fuel ratio sensor, damaged wiring or connectors, a blown fuse, or a malfunctioning ECM.
3. How can I diagnose the Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1 issue on my Infiniti?
- Use an OBDII scanner to retrieve the specific trouble code. Then, inspect the sensor, wiring, and connectors for any visible damage or corrosion. Check the fuse related to the sensor as well.
4. Can I continue driving my Infiniti with OBDII code P1031 active?
- It's not recommended to drive with the code active, as it can lead to poor engine performance and potential damage over time. It's best to address the issue promptly.
5. How do I repair OBDII code P1031 on my Infiniti?
- Repair options include replacing the air fuel ratio sensor, repairing or replacing damaged wiring or connectors, checking and replacing the fuse if necessary, and resetting the ECM.
6. Are there any DIY tips for fixing the Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1 issue?
- While some may attempt to replace the sensor themselves, it's recommended to have a professional diagnose and repair the issue to ensure it's properly resolved.
7. How much does it typically cost to repair OBDII code P1031 on an Infiniti?
- Repair costs can vary depending on the exact cause of the issue, but expect to pay for parts and labor, which can range from $200 to $500 or more at a dealership or repair shop.
8. What happens if I ignore OBDII code P1031 on my Infiniti?
- Ignoring the code can lead to decreased fuel efficiency, engine performance issues, and potential long-term damage to the engine and emissions system.
9. Can a faulty air fuel ratio sensor cause other problems besides triggering OBDII code P1031?
- Yes, a faulty sensor can lead to poor engine performance, increased emissions, failed emissions tests, and potential damage to the catalytic converter over time.
10. How long does it typically take to repair OBDII code P1031 related to the Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1?
- The repair time can vary depending on the exact cause of the issue and the availability of parts. In most cases, it can take a few hours to a full day to diagnose and repair the problem.
Discuss the causes and fixes for P1031 Infiniti OBDII Code
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I have an 2004 Infiniti FX35 that is displaying the service engine soon light. I went to get a diagnostic performed on the vehicle and the code that registered was P1031 and not to long after having it checked my temp. range in the suv began to steadily increase towards the the H on the meter... can you show me where this sensor is located and if replaced will it get my car back to running to the within the correct temp range?
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I have an 2004 Infiniti FX35 that is displaying the service engine soon light. I went to get a diagnostic performed on the vehicle and the code that registered was P1031 and not to long after having it checked my temp. range in the suv began to steadily increase towards the the H on the meter... can you show me where this sensor is located and if replaced will it get my car back to running correctly..
-
Please double check the code, there is no P1031 for your 2004 Infiniti FX35. The P1031 on other model is for the Air Fuel Ratio Sensor 1, which will not cause the engine overheat.
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