The OBD code P0158 for Acura indicates a problem with the Rear Heated Oxygen Sensor Bank 2. Symptoms include the Engine Light ON, increased fuel consumption.
Causes can be a faulty sensor, wiring issues, fuel pressure problems, or intake/exhaust leaks.
This issue should be addressed promptly to prevent further damage.
A possible fix is to inspect and repair any damaged wiring or connectors related to the sensor.
| Repair Importance Level | 6.67 (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 p0158 OBD Code
The vehicle may experience issues related to the oxygen sensor circuit high voltage (Bank 2 Sensor 2).
- With Acura OBD code P0158, you may notice the Engine Light ON.
- Higher fuel consumption.
Causes of the Acura p0158 OBD Code
P0158 in Acura indicates a potential issue with the oxygen sensor circuit high voltage.
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- P0158 can be caused by a Faulty Rear Heated Oxygen Sensor Bank 2.
- A Rear Heated Oxygen Sensor Bank 2 harness that is open or shorted.
- A Rear Heated Oxygen Sensor Bank 2 circuit with poor electrical connection.
- Inappropriate fuel pressure.
- Faulty fuel injectors.
- Intake air leaks.
- Exhaust gas leaks.
Fixing Acura Error Code p0158 Step By Step
Replace faulty oxygen sensor in bank 2 sensor 2 for Acura fault code P0158.
- To fix the Acura OBDII code P0158, first, review the ‘Possible Causes’ mentioned above and visually examine the corresponding wiring harness and connectors.
- Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
- Next, if the wiring and connectors appear to be in good condition, test the oxygen sensor (bank 2 sensor 2) using a multimeter to check for proper operation.
- If the sensor is faulty, replace it with a new one.
- Finally, clear the fault code using an OBDII scanner and test drive the vehicle to ensure the code does not return, indicating a successful repair.
Cost Of Fixing Acura p0158 Fault Code
The repair for Acura fault code P0158 involves diagnosing and replacing the faulty oxygen sensor.
The cost to diagnose and fix the Acura OBD code P0158 typically ranges from $75 to $150, with an estimated repair time of 1. 0 hour.
The final cost depends on shop rates, complexity of the issue, and any additional parts or labor needed for the repair.
Details of the Acura p0158 OBD Code
Fault code P0158 in Acura indicates an issue with the oxygen sensor circuit high voltage for Bank 2 Sensor 2.
OBD code P0158 for Acura vehicles indicates a fault with the Bank 2 Sensor 2 oxygen sensor.
This code is triggered when the ECM detects that the voltage signal from the Bank 2 Sensor 2 oxygen sensor remains high for an extended period of time.
The Bank 2 Sensor 2 oxygen sensor is located after the catalytic converter on the side of the engine that contains cylinder 2. This sensor monitors the efficiency of the catalytic converter and helps the ECM adjust the airfuel mixture for optimal emissions control.
Mechanic’s Tech Notes
This section provides detailed information on diagnosing and fixing Acura fault code P0158.
To diagnose and fix OBDII code P0158 in an Acura, start by using a voltmeter to test the oxygen sensor’s heater circuit.
Check for proper voltage supply and ground connections.
Next, use a scan tool to monitor the sensor’s activity and ensure it responds correctly.
If the sensor is not functioning as expected, it may need to be replaced.
Additionally, inspect the wiring harness and connectors for any damage, corrosion, or loose connections.
Address any issues found during the visual inspection.
Finally, clear the fault code and test drive the vehicle to verify if the problem has been resolved.
FAQ
OBD code P0158 in an Acura means an issue with the Rear Heated Oxygen Sensor Bank 2. Check sensor, wiring, fuel system, and connections for faults.
Common causes of OBD code P0158 in an Acura include a faulty Rear Heated Oxygen Sensor Bank 2, open/shorted sensor harness, poor electrical connection, and fuel system issues.
Diagnose and fix OBD code P0158 in your Acura by checking Rear Heated Oxygen Sensor Bank 2 and related wiring for faults or damage.
Wrap Up
If your Acura is displaying OBD code P0158, you may experience poor fuel economy, rough idling, or a decrease in engine performance.
This code typically indicates an issue with the oxygen sensor bank 2 sensor 2, such as a faulty sensor, wiring problem, or exhaust leak affecting sensor readings.
To address Acura OBD code P0158, start by inspecting the wiring harness and connectors for any damage or corrosion.
Test the oxygen sensor’s resistance and voltage output to determine if it needs replacement.
Ensure there are no exhaust leaks near the sensor affecting its readings.
