U240F
Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus
U240F is an OBD-II diagnostic trouble code meaning: Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus. Common causes: open or short circuit in the can bus, poor contact in trcm or ebcm module connectors. Estimated repair cost: $56–278.
Symptoms
- Transmission transition to emergency mode
- Malfunction indicator light comes on
- Loss of some brake system functions
- Gear shifting problems
- Possible malfunctions in the operation of other systems associated with the CAN bus
Causes
- Open or short circuit in the CAN bus
- Poor contact in TRCM or EBCM module connectors
- Transmission Range Control Module Malfunction
- Problems with power supply to one of the modules
- EBCM module malfunction
How to Fix
- Check the integrity of the CAN bus between modules
- Inspect and clean TRCM and EBCM connectors
- Check power and ground of both modules
- Scan all modules for additional fault codes
- If necessary, replace the faulty module
Related codes
FAQ
What does the U240F code mean?
U240F is an OBD-II diagnostic trouble code that indicates: Transmission Range Control Module Lost Communication With EBCM On High Speed CAN Bus
What causes a U240F error code?
The most common causes of U240F include: Open or short circuit in the CAN bus; Poor contact in TRCM or EBCM module connectors; Transmission Range Control Module Malfunction; Problems with power supply to one of the modules.
How do I fix a U240F diagnostic trouble code?
To fix U240F: Check the integrity of the CAN bus between modules. Inspect and clean TRCM and EBCM connectors. Check power and ground of both modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U240F?
Do not drive — repair immediately
How much does it cost to fix U240F?
The estimated repair cost for U240F is $56–278. Actual cost depends on your vehicle, location, and labor rates.
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