U0103High urgency
Lost Communication with Gear Shift Module
Network · CAN Bus
⛔ Transmission shifting may be impaired. Service promptly.
What this means
The gear shift module has stopped communicating on the CAN bus. The transmission may default to limp mode.
Likely causes
- Failed gear shift moduleMost common
- CAN bus wiring faultCommon
Estimated repair cost
Gear shift module$200 – $800
CAN bus wiring repair$100 – $300
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Frequently asked questions about U0103
What does U0103 mean?
The gear shift module has stopped communicating on the CAN bus. The transmission may default to limp mode.
Is U0103 serious?
Transmission shifting may be impaired. Service promptly.
How much does it cost to fix U0103?
Repair costs for U0103 range from $200 – $800 depending on the root cause and your vehicle.
Can I drive with U0103?
No — this code indicates a serious issue. Stop driving and have the vehicle inspected immediately.