BMW DTC P242C – Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 3)
DTC P242C meaning on BMW
DTC P242C indicates a low circuit condition in the exhaust gas temperature (EGT) sensor for Bank 1 Sensor 3 on a BMW vehicle. This fault code is specific to the EGT sensor located after the catalytic converter on the bank 1 side of the engine.
BMW DTC P242C symptoms
Symptoms of DTC P242C on a BMW may include:
- Check Engine Light (CEL) illuminated on the dashboard
- Reduced engine performance or power
- Increased fuel consumption
- Possible rough idling or misfiring
BMW DTC P242C causes
The common causes of DTC P242C on a BMW include:
- Defective exhaust gas temperature sensor (Bank 1 Sensor 3)
- Wiring or connector issues in the EGT sensor circuit
- Faulty engine control module (ECM)
BMW DTC P242C seriousness
While DTC P242C may not cause immediate drivability issues, it is important to address this fault code promptly to prevent potential damage to the catalytic converter and ensure optimal engine performance and emissions control.
How to diagnose DTC P242C on BMW
To diagnose DTC P242C on a BMW, follow these steps:
- Use a diagnostic scanner to retrieve the fault code and freeze frame data
- Inspect the wiring and connectors related to the Bank 1 Sensor 3 EGT sensor
- Test the EGT sensor for proper resistance and voltage readings
- Check for any exhaust leaks or other related issues
How to fix DTC P242C on BMW
To fix DTC P242C on a BMW, consider the following:
- Replace the faulty exhaust gas temperature sensor (Bank 1 Sensor 3)
- Repair any damaged wiring or connectors in the EGT sensor circuit
- If necessary, replace the engine control module (ECM)
How to erase DTC P242C on BMW
To erase DTC P242C on a BMW, you can use a diagnostic scanner to clear the fault code after the underlying issue has been resolved. This will reset the Check Engine Light and allow the vehicle’s ECM to monitor the system for any new faults.