U0207 — Lost Communication With Movable Roof Control Module

What are the symptoms of U0207?

Drivers most often notice: modules intermittently not communicating with the scanner, random, hard-to-reproduce electrical glitches, no-start or intermittent starting in some cases, multiple warning lights on at once.

What is the most common cause of U0207?

The most common causes are: damaged CAN bus wiring or short to power/ground, a faulty module pulling the bus down, poor grounds or low battery voltage.

How do I diagnose U0207 myself?

Start with a scan: confirm U0207, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the vehicle network (CAN bus) communication, and verify the suspect component against live data before buying parts.

How much does it cost to fix U0207?

Remove interfering aftermarket device — $0–$150; Repair CAN wiring or connectors — $100–$400; Replace the faulty control module — $300–$1,500. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.

Will U0207 clear itself?

Sometimes U0207 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.

What does U0207 mean?

The engine control module sets U0207 when it detects a fault in the vehicle network (CAN bus) communication. In practical terms: lost communication with movable roof control module. The code belongs to the vehicle network group of OBD2 codes.

The module monitors this system continuously while driving. When readings fall outside the expected range for a defined number of drive cycles, it stores U0207 and switches on the warning light. Freeze frame data saved with the code shows the exact conditions — rpm, load, temperature, speed — at the moment the fault was detected, which is the best starting point for diagnosis.

What causes U0207?

• aftermarket equipment interfering with the bus
• water ingress in harness junctions
• corroded connectors, especially in wet areas
• damaged CAN bus wiring or short to power/ground

Common symptoms of U0207

• modules intermittently not communicating with the scanner
• random, hard-to-reproduce electrical glitches
• no-start or intermittent starting in some cases
• multiple warning lights on at once
• intermittent loss of functions (gauges, windows, steering assist)

How to diagnose U0207

1. Connect an OBD2 scanner, confirm U0207 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
2. Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many U0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
3. Visually inspect the wiring harness and connectors related to the vehicle network (CAN bus) communication for damage, corrosion, chafing or poor contact.
4. Measure resistance between CAN-High and CAN-Low at the OBD port with power off — about 60 Ω is healthy.
5. Scan all modules: the one that does not respond is either the culprit or downstream of the break.
6. Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm U0207 does not return.

How to fix U0207

Start with the cheapest and most common causes before replacing expensive parts:

• Remove interfering aftermarket device — $0–$150
• Repair CAN wiring or connectors — $100–$400
• Replace the faulty control module — $300–$1,500

How much does it cost to fix U0207?

Repair cost depends on which component actually failed. Typical scenarios for U0207 (parts and labor, USD, independent shop rates):

• Remove interfering aftermarket device: $0–$150
• Repair CAN wiring or connectors: $100–$400
• Replace the faulty control module: $300–$1,500

Overall, fixing U0207 usually costs between $0 and $1,500. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.

Can you drive with U0207?

Depends on what is affected. A single dead convenience module is fine to drive with; loss of communication with engine, braking or steering modules is not. If multiple critical systems drop out, do not drive.

Related OBD2 codes

• U0200: Lost Communication With "Door Control Module B"
• U0201: Lost Communication With "Door Control Module C"
• U0202: Lost Communication With "Door Control Module D"
• U0203: Lost Communication With "Door Control Module E"
• U0204: Lost Communication With "Door Control Module F"
• U0205: Lost Communication With "Door Control Module G"