U240D
Transmission Range Selector Control Module Powertrain Expansion CAN Bus Off
U240D is an OBD-II diagnostic trouble code meaning: Transmission Range Selector Control Module Powertrain Expansion CAN Bus Off. Common causes: open or short circuit in the can bus, poor contact in module connectors. Estimated repair cost: $133–389.
Symptoms
- Incorrect display of gear lever position
- Gear shifting problems
- Transmission transition to emergency mode
- Transmission fault warning light comes on
- Loss of adaptive shift characteristics
Causes
- Open or short circuit in the CAN bus
- Poor contact in module connectors
- Transmission Range Select Module Failure
- Problems with module power or grounding
- Wiring harness damage
How to Fix
- Check the integrity of the CAN bus wiring
- Check connections and contacts in module connectors
- Check power supply and grounding of the module
- Scan the module for errors
- If necessary, replace the transmission range selector module
Related codes
FAQ
What does the U240D code mean?
U240D is an OBD-II diagnostic trouble code that indicates: Transmission Range Selector Control Module Powertrain Expansion CAN Bus Off
What causes a U240D error code?
The most common causes of U240D include: Open or short circuit in the CAN bus; Poor contact in module connectors; Transmission Range Select Module Failure; Problems with module power or grounding.
How do I fix a U240D diagnostic trouble code?
To fix U240D: Check the integrity of the CAN bus wiring. Check connections and contacts in module connectors. Check power supply and grounding of the module. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U240D?
Limited driving only, diagnose soon
How much does it cost to fix U240D?
The estimated repair cost for U240D is $133–389. Actual cost depends on your vehicle, location, and labor rates.
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