BMW DTC P077E – Transmission Fluid Temperature Measurement System – Multiple Sensor Correlation
DTC P077E meaning on BMW
The DTC P077E on a BMW refers to the Transmission Fluid Temperature Measurement System – Multiple Sensor Correlation fault. This diagnostic trouble code indicates that there is a discrepancy or correlation issue between the readings from multiple sensors related to the transmission fluid temperature.
BMW DTC P077E symptoms
Symptoms of the BMW DTC P077E may include:
- Check Engine Light illuminated
- Transmission shifting issues
- Reduced fuel efficiency
- Transmission overheating
BMW DTC P077E causes
Common causes of the BMW DTC P077E include:
- Defective transmission fluid temperature sensors
- Wiring or connector issues in the transmission fluid temperature sensor circuit
- Faulty transmission control module (TCM)
- Software glitches in the TCM
BMW DTC P077E seriousness
The DTC P077E should be addressed promptly as it can lead to potential transmission damage if left unresolved. Ignoring this fault may result in further transmission issues and potentially costly repairs.
How to diagnose DTC P077E on BMW
To diagnose the DTC P077E on a BMW, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault codes
- Inspect the transmission fluid temperature sensors and their wiring for any visible damage
- Check the TCM for any software updates or glitches
- Perform a thorough inspection of the transmission system for any related issues
How to fix DTC P077E on BMW
To fix the DTC P077E on a BMW, the following steps may be taken:
- Replace any faulty transmission fluid temperature sensors
- Repair or replace any damaged wiring or connectors in the sensor circuit
- Update the TCM software if necessary
- Clear the fault codes and perform a test drive to ensure the issue is resolved
How to erase DTC P077E on BMW
To erase the DTC P077E on a BMW, the fault codes can be cleared using a diagnostic scanner. After the repairs have been made and the issue resolved, the codes can be cleared to reset the Check Engine Light and ensure the fault does not reoccur.
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
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