P1051 Infiniti Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2
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 2, Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted, Air Fuel Ratio Sensor 1 Bank 2 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
- P1051 Infiniti indicates Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2.
- Common causes
- Common causes include Faulty Air Fuel Ratio Sensor 1 Bank 2, Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted, Air Fuel Ratio Sensor 1 Bank 2 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 P1051 Infiniti Description
What are the Possible Causes of the DTC P1051 Infiniti?
- Faulty Air Fuel Ratio Sensor 1 Bank 2
- Air Fuel Ratio Sensor 1 Bank 2 harness is open or shorted
- Air Fuel Ratio Sensor 1 Bank 2 circuit poor electrical connection
How to Fix the DTC P1051 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 P1051
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 P1051 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.
Need more information about the P1051 Infiniti code?
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Need Help with the Code?
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Information for Specific Infiniti Models
- P1051 2004 Infiniti G35 — Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2
- P1051 2005 Infiniti G35 — Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 2
Frequently Asked Questions about P1051 Infiniti Code
1. What are the common symptoms of OBDII code P1051 in an Infiniti?
- Common symptoms include poor fuel economy, rough idling, engine misfires, and potential stalling.
2. What causes the OBDII code P1051 in an Infiniti?
- The code is usually triggered by a malfunction in the Air Fuel Ratio Sensor 1 Heater Control Circuit on Bank 2, which can be caused by wiring issues, a faulty sensor, or a blown fuse.
3. How can I diagnose the OBDII code P1051 in my Infiniti?
- Diagnosis typically involves checking the wiring and connectors of the Air Fuel Ratio Sensor 1 on Bank 2, testing the sensor itself, and verifying the integrity of related fuses.
4. Can I still drive my Infiniti with the OBDII code P1051 present?
- It is not recommended to drive the vehicle with this code present, as it can lead to poor engine performance and potential damage if left unresolved.
5. What is the repair process for fixing OBDII code P1051 in an Infiniti?
- The repair process usually involves replacing the Air Fuel Ratio Sensor 1 on Bank 2, repairing any wiring issues, and ensuring proper connection and functionality of the sensor.
6. Are there any DIY tips for addressing OBDII code P1051 in an Infiniti?
- DIY tips include checking for visible wiring issues, ensuring proper sensor connection, and verifying the condition of related fuses before considering sensor replacement.
7. How much does it typically cost to repair OBDII code P1051 in an Infiniti?
- The cost of repair can vary depending on the extent of the issue, but it typically ranges from $200 to $500, including parts and labor.
8. Can resetting the OBDII code P1051 in my Infiniti fix the issue temporarily?
- Resetting the code may temporarily turn off the check engine light, but it will not address the underlying problem causing the code to trigger.
9. How long does it take to repair OBDII code P1051 in an Infiniti?
- The repair process can usually be completed within a few hours, depending on the availability of parts and the complexity of the issue.
10. Is it necessary to take my Infiniti to a dealership for OBDII code P1051 repair?
- While you can take your vehicle to a dealership for repair, this issue can also be addressed by independent mechanics or auto repair shops specializing in Infiniti vehicles.
Discuss the causes and fixes for P1051 Infiniti OBDII Code
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Hello I have a 04 g35x sedan code p1051 bank 2 ..Is that a downstream sensor on the passenger side ...???
-
No, is the Upstream (Front or Sensor 1) Driver side. Here is a view from under the vehicle.
Click here to enlarge image
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