OBD-II Code P2246 is defined as O2 Sensor Reference Voltage Circuit High. This code indicates that the Powertrain Control Module (PCM) has detected a problem in the oxygen sensor reference voltage circuit.
What Does the P2246 Code Mean?
The P2246 code signifies that there is an issue with the oxygen sensor’s reference voltage circuit, which is crucial for the PCM to maintain efficient fuel economy and engine performance. When the PCM identifies a failure in the oxygen sensor or the information it receives from the sensor, it sets this code.
What Causes the P2246 Code?
Several factors can trigger the P2246 code, including:
- Exhaust leak
- Oxygen sensor failure
- Powertrain Control Module (PCM) failure
- Wiring issues
What Are the Symptoms of the P2246 Code?
The symptoms of the P2246 code can include:
- Decreased engine performance
- Increased fuel consumption
How Serious Is the P2246 Code?
The P2246 code is considered to have moderate severity. While it may not pose an immediate threat to the vehicle’s safety or functionality, it is advisable to have it diagnosed within a reasonable timeframe to prevent further complications and ensure the vehicle operates efficiently.
How to Diagnose the P2246 Code
To properly diagnose the P2246 code, a certified mechanic will typically perform the following steps:
- Use an OBD-II scanner to confirm the presence of the P2246 code.
- Inspect the wiring and connectors related to the oxygen sensor.
- Check for exhaust leaks that may affect oxygen sensor readings.
- Test the functionality of the oxygen sensor.
- Evaluate the PCM for any faults.
Common Repairs for the P2246 Code
Common repairs that may be needed to resolve the P2246 code include:
- Oxygen sensor replacement
- Repairing or replacing damaged wiring
- Fixing any exhaust leaks
- Replacing the Powertrain Control Module (if necessary)
How Much Does It Cost to Fix the P2246 Code?
The cost to fix the P2246 code can vary based on the underlying issue. Generally, expect to pay anywhere from $100 to $300 for oxygen sensor replacement. Additional repairs, such as fixing wiring or exhaust leaks, may increase the total cost significantly.
Can I Fix the P2246 Code Myself?
If you have experience with automotive repairs, you might be able to troubleshoot and fix the P2246 code yourself, particularly if it involves replacing the oxygen sensor or repairing wiring. However, for more complex issues or if you’re unsure, it’s advisable to seek help from a professional mechanic to ensure proper diagnosis and repair.
