The P2086 code is a diagnostic trouble code (DTC) that indicates an issue with the Exhaust Gas Temperature (EGT) sensor circuit. This code specifically refers to the range and performance of the EGT sensor in relation to the engine control module (PCM).
What Does the P2086 Code Mean?
The P2086 code signifies that the PCM has detected an implausible signal from the Exhaust Gas Temperature sensor. The EGT sensor measures the temperature of the exhaust gases entering and exiting the Selective Catalytic Reduction (SCR) system, which is critical for optimal engine performance and emissions control.
What Causes the P2086 Code?
- Exhaust Gas Temperature (EGT) sensor failure
- Powertrain Control Module (PCM) failure
- Wiring issues, such as shorts or open circuits in the EGT sensor circuit
What Are the Symptoms of the P2086 Code?
Vehicles experiencing a P2086 code may exhibit:
- Decreased engine performance
How Serious Is the P2086 Code?
The severity of the P2086 code is considered moderate. While it may not pose an immediate threat to the vehicle’s safety or functionality, it is crucial to address the issue promptly to prevent further complications and maintain engine performance.
How to Diagnose the P2086 Code
Proper diagnosis of the P2086 code involves the following steps:
- Use an OBD-II scanner to confirm the P2086 code and check for any additional codes.
- Inspect the EGT sensor and its wiring for visible damage or disconnections.
- Test the EGT sensor using a multimeter to ensure it is functioning within specifications.
- Check the PCM for potential faults if the EGT sensor tests normal.
Common Repairs for the P2086 Code
Common repairs to resolve the P2086 code may include:
- Replacing a faulty Exhaust Gas Temperature (EGT) sensor
- Repairing or replacing damaged wiring or connectors in the EGT sensor circuit
- Reprogramming or replacing the Powertrain Control Module (PCM) if necessary
How Much Does It Cost to Fix the P2086 Code?
The cost of repairing the P2086 code can vary widely based on the specific issue and the make and model of the vehicle. Typical repair costs may range from $100 to $500, depending on whether the EGT sensor needs replacement or if wiring repairs are required.
Can I Fix the P2086 Code Myself?
If you have experience with automotive repair and access to the necessary tools, you may be able to diagnose and fix the P2086 code yourself. However, if you are unsure or lack the proper equipment, it is advisable to seek assistance from a professional mechanic to ensure the issue is resolved correctly.
