The OBD code P1157 for Acura indicates an issue with the Air/Fuel Ratio Sensor 1. Symptoms include the Engine Light being ON.
This code is usually caused by a faulty sensor, open/shorted sensor harness, or poor electrical connection.
It’s important to address this code promptly to prevent potential engine performance issues.
A possible fix involves inspecting the sensor, harness, and connectors for any damage or poor connections.
| Repair Importance Level | 10.0 (Out of 10) |
| Estimated Repair Time | Approximately 1.0 hour |
| Repair Difficulty Level | 6.67 (Out of 10) |
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Symptoms of the Acura p1157 OBD Code
The vehicle may experience poor fuel economy and rough idling with fault code P1157 on Acura.
- Symptoms: Engine Light ON.
- Possible lack of power during acceleration.
- Rough idle.
Causes of the Acura p1157 OBD Code
Possible reasons for Acura fault code P1157 include issues with the primary heated oxygen sensor.
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- P1157 can be caused by a faulty Air/Fuel Ratio Sensor 1.
- An open or shorted Air/Fuel Ratio Sensor 1 harness.
- A poor electrical connection in the Air/Fuel Ratio Sensor 1 circuit.
Fixing Acura Error Code p1157 Step By Step
Address the issue by inspecting the airfuel ratio sensor circuit on an Acura with fault code P1157.
- To fix the Acura OBDII code P1157, start by reviewing the possible causes and visually examining the wiring harness and connectors.
- Check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, verify the operation of the AirFuel Ratio Sensor 1 and its wiring.
- Test the sensor’s resistance and voltage output to ensure proper function.
- If the sensor is faulty, replace it with a new one.
- Clear the fault code using a scan tool and test drive the vehicle to verify that the issue has been resolved.
Cost Of Fixing Acura p1157 Fault Code
The repair for Acura fault code P1157 involves replacing the heated oxygen sensor.
The cost to diagnose and fix the Acura OBD code P1157 typically ranges from $75 to $150, based on an estimated repair time of 1. 0 hour.
Factors like shop rates and complexity of the issue can influence the final cost.
Details of the Acura p1157 OBD Code
Acura P1157 indicates an issue with the primary heated oxygen sensor in bank 2.
Acura OBD code P1157 means that a fault has been detected in the primary heated oxygen sensor (Sensor 1) for Bank 2. This sensor is responsible for monitoring the oxygen content in the exhaust gases.
The Engine Control Module (ECM) triggers this code when it detects a discrepancy in the oxygen sensor’s readings, indicating a potential issue with the airfuel mixture in Bank 2 of the engine.
This code is specific to Acura vehicles and is related to the emissions control system.
Mechanic’s Tech Notes
Detailed information on Acura fault code P1157, including possible causes and diagnostic procedures.
To diagnose and fix OBDII code P1157 in an Acura, start by checking the wiring harness and connectors related to the A/F sensor (Bank 2 Sensor 1).
Use a multimeter to test for continuity and voltage at the sensor connector.
Inspect for any damaged wires, broken pins, or corrosion.
If the wiring looks good, the issue may lie with the A/F sensor itself.
Consider replacing the sensor if necessary.
Additionally, using a scan tool to monitor sensor data can help pinpoint the problem.
Resetting the fault code after any repairs is recommended to see if the issue persists.
FAQ
Common symptoms of OBD code P1157 in an Acura include the Engine Light ON and possible causes are a faulty Air/Fuel Ratio Sensor 1 or related wiring issues.
OBD code P1157 in Acura vehicles is typically caused by a faulty Air/Fuel Ratio Sensor 1, open/shorted harness, or poor electrical connection. Inspect and repair as needed.
Diagnose and fix OBD code P1157 in your Acura by checking Air/Fuel Ratio Sensor 1 and its wiring for faults like open circuits or poor connections.
Wrap Up
If your Acura is displaying OBD code P1157, you may experience poor engine performance, rough idling, or decreased fuel efficiency.
This code typically indicates an issue with the primary heated oxygen sensor (HO2S) in bank 2, which could be caused by a faulty sensor, wiring problem, or exhaust leak affecting sensor readings.
To address Acura OBD code P1157, start by inspecting the wiring harness and connectors leading to the primary HO2S in bank 2. Test the sensor’s resistance and functionality, replacing it if necessary.
Check for any exhaust leaks
