The automobile fault code P1159 indicates a problem with the AirFuel Ratio Sensor 1. This can cause the Engine Light to turn on or the Service Engine Soon Warning Light to illuminate.

The possible causes include a faulty sensor, an open or shorted harness, or a poor electrical connection in the sensor circuit.

To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look out for broken, bent, pushed out, or corroded pins in the connectors. The repair time for this problem is estimated to be around 1.0 hour.

To interpret the fault code, check the “Possible Causes” mentioned above and follow the recommended steps for inspection and repair.

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

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1159 fault code.

  • The symptoms of the automobile fault code p1159 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1159 can be caused by a faulty AirFuel Ratio Sensor 1, an open or shorted harness, or a poor electrical connection in the sensor circuit.

  • The fault code P1159 can be caused by a faulty Air/Fuel Ratio Sensor 1, an open or shorted harness for the Air/Fuel Ratio Sensor 1, or a poor electrical connection in the Air/Fuel Ratio Sensor 1 circuit.

To fix the p1159 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1159, 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 connector pins.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the diagnosis and fixing cost of the automobile fault code p1159 are the estimated repair time and the hourly rate charged by auto repair shops. The estimated repair time for this fault code is 1.0 hour. Auto repair shops typically charge between $75 and $150 per hour for their services.

These factors will determine the overall cost of diagnosing and fixing the p1159 fault code.

The P1159 fault code refers to the AirFuel Ratio (AF) sensor 1 in the exhaust system.

This sensor detects the oxygen content in the exhaust gas and transmits voltage output to the Engine Control Module (ECM).

It has a built-in heater that stabilizes and speeds up the detection of oxygen content by controlling the current flowing through it. The current amperage is proportional to the oxygen content, allowing the ECM to compare the detected airfuel ratio with the target ratio and control the fuel injection timing accordingly. When the AF sensor (sensor 1) voltage is low, indicating a lean airfuel ratio, the ECM uses AF feedback control to issue a Rich command. On the other hand, if the AF sensor (sensor 1) voltage is high, indicating a rich airfuel ratio, the ECM uses AF feedback control to issue a Lean command.

The P1159 fault code specifically indicates that the AF sensor 1 AFS+ terminal has low voltage. This fault code helps diagnose and address issues related to the airfuel ratio in the vehicle’s engine.

What are the possible causes of fault code P1159 in an automobile?

If you’re seeing the engine light on or the service engine soon warning light in your automobile, it could be due to fault code P1159. This code is often caused by a faulty air/fuel ratio sensor 1, an open or shorted harness for the sensor, or a poor electrical connection in the sensor circuit. To fix this issue, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check for broken, bent, pushed out, or corroded pins in the connectors.

How can I visually inspect the wiring harness and connectors related to the Air/Fuel Ratio Sensor 1?

If you’re dealing with an illuminated Engine Light or Service Engine Soon Warning Light, the culprit could be a faulty Air/Fuel Ratio Sensor 1. To address this issue, start by visually inspecting the wiring harness and connectors associated with the sensor. Look out for any damaged components and check for broken, bent, pushed out, or corroded pins in the connectors. This step is crucial in identifying any open or shorted circuits or poor electrical connections. Don’t forget to refer to the “Possible Causes” mentioned earlier for a comprehensive fix.

What should I look for when checking for damaged components or corroded connector pins in relation to fault code P1159?

When dealing with fault code P1159, it’s important to check for damaged components and corroded connector pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any broken, bent, pushed out, or corroded pins. By doing so, you can identify any issues with the Air/Fuel Ratio Sensor 1 or its circuit connection, which may be causing the engine light to turn on. Don’t forget to also check for any open or shorted harnesses.

p1159 error fault code explained

If your engine light is on and you’re seeing the P1159 fault code, it could be due to a faulty AirFuel Ratio Sensor 1 or issues with the sensor’s wiring. To fix it, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Look out for broken or bent pins as well.

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