[SOLVED] P1155 Code: Fix Air/Fuel Ratio Sensor Heater Circuit Malfunction Fast!

The automobile fault code P1155 indicates a problem with the Air-Fuel Ratio (AF) Sensor Bank 2 Sensor 1. This can cause the Engine Light to turn on or trigger the Service Engine Soon Warning Light.

The possible causes include a faulty sensor, an open or shorted harness, a poor electrical connection in the circuit, or a faulty Engine Control Module (ECM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors. The repair time for this issue is estimated to be around 1.0. It is important to address this fault code promptly to ensure optimal engine performance.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (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 p1155 fault code.

  • The symptoms of the automobile fault code P1155 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1155 can be caused by a faulty AF sensor, open or shorted sensor harness, poor electrical connection, or a faulty ECM.

  • The fault code P1155 can be caused by: a faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, an open or shorted harness for the Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, a poor electrical connection in the circuit of the Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, or a faulty Engine Control Module (ECM).

To fix the p1155 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1155, 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 automobile fault code P1155 can be diagnosed and fixed within an estimated repair time of 1.0 hour. The cost of the repair is typically charged by auto repair shops at a rate of $75 to $150 per hour.

The P1155 fault code indicates a malfunction in the airfuel ratio sensor heater circuit for Bank 2. This sensor is responsible for producing an accurate voltage signal once it reaches a minimum operating temperature of 1200 degrees F. The faster the sensor reaches this temperature, the quicker it can send an accurate signal to the Engine Control Module (ECM).

To achieve the required temperature, a heater element is included inside the sensor, which is controlled by the ECM based on signals from the engine coolant temperature and engine load. The ECM monitors the voltage signal received through the heater element circuit and compares it with factory specifications to determine the state of the circuit.

What does it mean when the engine light is on and the fault code p1155 is displayed?

If your engine light is on and the fault code P1155 is displayed, it means there is a problem with the Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1. This could be due to a faulty sensor, an open or shorted harness, a poor electrical connection in the circuit, or a faulty Engine Control Module (ECM). To fix this issue, you should visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, look for any broken, bent, pushed out, or corroded pins in the connectors.

What are the possible causes of the p1155 fault code?

If you’re experiencing the p1155 fault code, you may notice that your engine light is on or you have a service engine soon warning light. This code is typically caused by a faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, an open or shorted harness, a poor electrical connection in the sensor circuit, or a faulty Engine Control Module (ECM). 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 connector pins.

How can I fix the p1155 fault code?

If you’re dealing with the p1155 fault code, you may have noticed your engine light or service engine soon warning light is on. This code is typically caused by a faulty Air-Fuel Ratio (A/F) Sensor Bank 2 Sensor 1, an open or shorted harness, a poor electrical connection in the circuit, or a faulty Engine Control Module (ECM). To fix it, 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.

p1155 error fault code explained

If your engine light is on and you’re seeing the P1155 fault code, it could be due to a faulty Air-Fuel Ratio (AF) Sensor Bank 2 Sensor 1 or issues with the sensor’s harness or circuit connection.

To fix it, visually inspect the wiring harness and connectors, checking for any damage or corrosion.

Don’t forget to examine the connector’s pins for any signs of breakage, bending, or corrosion.

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