[SOLVED] P1051 Code: Fix Low Bank 2 Air Fuel Ratio Sensor Heater!

The automobile fault code P1051 indicates a problem with the Air Fuel Ratio Sensor 1 Bank 2. The symptoms may include poor engine performance, decreased fuel efficiency, and an illuminated check engine light.

The cause of this fault code could be a faulty sensor, an open or shorted harness, or a poor electrical connection. To fix the issue, it is recommended to visually inspect the wiring harness and connectors for any damage. Check for broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0 hour.

It is important to address this fault code promptly to prevent further damage to the vehicle’s engine and ensure optimal performance.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (Out of 10)

Experiencing rough idling, stalling, and decreased engine performance?

Check out the symptoms of fault code p1051 below.

  • The symptoms of the automobile fault code P1051 include rough idling, stalling, poor acceleration, engine misfires, decreased fuel efficiency, and the check engine light being illuminated.

The automobile fault code p1051 can be caused by a faulty Air Fuel Ratio Sensor 1 Bank 2, an open or shorted harness, or a poor electrical connection in the circuit.

  • The fault code P1051 can be caused by the following: 1.
  • Faulty Air Fuel Ratio Sensor 1 Bank 2.
  • 2.
  • Open or shorted harness of Air Fuel Ratio Sensor 1 Bank 2.
  • 3.
  • Poor electrical connection in the circuit of Air Fuel Ratio Sensor 1 Bank 2.

To fix the automobile fault code p1051, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1051, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded pins on the connectors.
  • This fix typically takes around 1.0 hour to complete.

The factors influencing the diagnosis and fixing cost of the automobile fault code p1051 are the estimated repair time of 1.0 hour and the average hourly rate charged by auto repair shops, which ranges between $75 and $150.

When you see the Engine Light ON or the Service Engine Soon Warning Light, it could be due to the fault code P1051. This code indicates a problem with the Intake Manifold Runner Control (IMRC) system.

The IMRC system is responsible for controlling the airflow into the engine, optimizing performance at different RPM ranges. The P1051 fault code specifically points to a malfunction in the IMRC valve stuck open. This means that the valve is not closing properly, causing an imbalance in the air-to-fuel mixture.

As a result, you may experience rough idling, reduced engine power, and decreased fuel efficiency. To fix this issue, you will need to inspect the IMRC valve and its associated components.

Start by checking for any physical damage or debris that may be obstructing the valve’s movement.

Clean or replace the valve if necessary. Additionally, it is important to inspect the wiring and connectors related to the IMRC system for any signs of damage or corrosion. Repair or replace any faulty components as needed.

By addressing the P1051 fault code promptly, you can restore your engine’s performance and ensure optimal fuel economy.

What are the possible causes of fault code P1051 in an automobile?

The fault code P1051 in an automobile could be caused by a faulty Air Fuel Ratio Sensor 1 Bank 2, an open or shorted harness for the sensor, or a poor electrical connection in the circuit. To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or broken pins. It’s important to address these possible causes to resolve the fault code.

How can I visually inspect the wiring harness and connectors to fix fault code P1051?

To fix fault code P1051, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This can help identify if the issue lies with the faulty Air Fuel Ratio Sensor 1 Bank 2 or if there is an open or shorted circuit or poor electrical connection. Take note of the possible causes listed above and address them accordingly.

What should I look for when checking for damaged components and connector pins to resolve fault code P1051?

To resolve fault code P1051, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins. These issues can cause a faulty Air Fuel Ratio Sensor 1 Bank 2 or a poor electrical connection in the sensor circuit. By checking and addressing these possible causes, you can effectively resolve the P1051 fault code.

p1051 error fault code explained

To fix the P1051 fault code, start by visually inspecting the wiring harness and connectors related to the Air Fuel Ratio Sensor 1 Bank 2. Look for any damage or corrosion. Check for broken, bent, or pushed out connector pins.

Address any issues found to resolve the problem.

Scroll to Top