BMW DTC P2086 – Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 2 Sensor 2)
DTC P2086 meaning on BMW
The Diagnostic Trouble Code (DTC) P2086 for BMW refers to the Exhaust Gas Temperature Sensor Circuit Range/Performance issue on Bank 2 Sensor 2. This code indicates that the signal from the exhaust gas temperature sensor located after the catalytic converter on bank 2 is not within the expected range or is performing outside the specified parameters.
BMW DTC P2086 symptoms
Symptoms of DTC P2086 on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced engine performance
- Increased fuel consumption
- Possible rough idling or misfiring
BMW DTC P2086 causes
Common causes of DTC P2086 on a BMW include:
- Failed exhaust gas temperature sensor
- Wiring or connector issues in the sensor circuit
- Exhaust leaks near the sensor
- Software or calibration issues
BMW DTC P2086 seriousness
While DTC P2086 may not cause immediate drivability issues, it is important to address this problem promptly. Ignoring this fault can lead to decreased fuel efficiency, potential damage to the catalytic converter, and may result in the vehicle failing emissions tests.
How to diagnose DTC P2086 on BMW
To diagnose DTC P2086 on a BMW, a mechanic would typically perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes and freeze frame data
- Inspect the wiring and connectors related to the exhaust gas temperature sensor
- Check the sensor’s resistance and voltage output
- Perform a visual inspection for any exhaust leaks near the sensor
How to fix DTC P2086 on BMW
To fix DTC P2086 on a BMW, the following steps may be taken:
- Replace the faulty exhaust gas temperature sensor
- Repair any damaged wiring or connectors in the sensor circuit
- Address any exhaust leaks near the sensor
- Perform a software update or calibration if necessary
How to erase DTC P2086 on BMW
After fixing the underlying issue causing DTC P2086 on a BMW, the fault code can be erased using a diagnostic scanner. This will clear the code from the vehicle’s memory and turn off the Check Engine Light. It is important to ensure that the repair has been successful before clearing the code.
Recommended tools & DTC Scanners for BMW
Best Diagnostic App for modern BMWs: BimmerLink
Recommended Bluetooth adapter for Bimmerlink: OBDLink CX
Cable adapter for Bimmerlink: Enet Cable USB Type C
For older BMWs we recommend: Autel AutoLink AL319 (2024 version)
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.