Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2009 Volvo XC70 BaseFACTORY OEM SERVICE PROCEDURE
Trailer Module (TRM) DTCS
TRAILER MODULE (TRM) - DTC INDEX
| DTC | Volvo Code | Description |
|---|---|---|
| B1102 | TRM-B110262 | Trailer stop lamp. Algorithm Based Failures. Signal compare failure |
| U0010 | TRM-U001000 | Medium Speed CAN Communication Bus. General Failure Information. No sub type information |
| U0140 | TRM-U014000 | Lost Communication With Central electronic module. General Failure Information. No sub type information |
| U0300 | TRM-U030000 | Internal Control Module Software Incompatibility. General Failure Information. No sub type information |
| U2100 | TRM-U210000 | Control Module Not Configured. General Failure Information. No sub type information |
| U2101 | TRM-U210100 | Control Module Configuration Incompatible. General Failure Information. No sub type information |
| U3000 | TRM-U300042 | Control Module. System Internal Failures. General memory failure |
| U3000 | TRM-U300051 | Control Module. System Programming Failures. Not programmed |
| U3003 | TRM-U300362 | Battery Voltage. Algorithm Based Failures. Signal compare failure |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.