Invalid or Missing Network Data (Ford/GM enhanced comms)
The U1207 code means the vehicle's onboard diagnostic system has detected: Invalid or Missing Network Data (Ford/GM enhanced comms). This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- Varies — depends on the specific component this manufacturer-specific code points to on your vehicle. Diagnose before buying parts.
Manufacturer-specific code. U1207 is a manufacturer-specific DTC, so its exact definition can differ by make, model, and year. Use the meaning above as a general guide, and always confirm it against your vehicle manufacturer's official service information (or a make-specific scan tool) before diagnosing or replacing parts.
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Check Engine or a related warning light on
- Exact symptoms depend on the specific system this code covers for your make
- A make-specific scan reveals which subsystem and circuit is involved
Probable Causes (Ranked by Likelihood)
- A fault in the specific component or circuit this code monitors (the exact part varies by manufacturer) High
- Damaged wiring, a corroded connector, or a poor ground in that circuit Moderate
- A related sensor or control module reporting or causing the fault Moderate
Step-by-Step Diagnostic Procedure
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Confirm your exact make, model, and year first — U1207 is manufacturer-specific and can mean different things across brands.
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Read U1207 with an enhanced/make-specific scan tool and check your manufacturer's official service information for the precise definition and procedure.
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Inspect the wiring, connectors, and grounds for the indicated circuit before replacing any part.
Common Fixes by Vehicle
What techs usually find when diagnosing U1207 on specific vehicles — tap your vehicle for the fix and the exact part:
2006-2011 Honda Civic Moderate DIY
U1207 lost comm with door module on Civic is almost always a broken wire in the driver's door harness where it enters the A-pillar. Peel back the rubber boot and inspect for cracked wires -- solder-repair broken conductors. Honda TSB 07-066 covers this failure. If wiring is intact, the door multiplex control unit behind the door panel may have failed.
Labor: 1-2 hours2005-2012 Honda Accord/Acura TL Moderate DIY
Accord and TL set U1207 when the driver's door control unit loses communication, usually from fatigued wires in the door jamb. Open the door and flex the harness boot -- if codes clear/set with movement, the wires are broken internally. Repair at the break point and weatherproof with heat shrink. Honda door modules rarely fail internally; it's almost always wiring.
Labor: 2-3 hours2009-2015 Honda Pilot/Ridgeline Moderate DIY
On Pilot and Ridgeline U1207 typically traces to the driver's door module or a corroded connector. Pull the door panel and inspect the 20-pin connector at the door module for green corrosion -- a common issue in wet climates. Clean with DeoxIT, apply dielectric grease, and re-seat. If module fails, Honda 83550-SZA-A71 is the replacement.
Labor: 1-2 hoursFrequently Asked Questions
Does U1207 mean the same thing on every vehicle?
No. U1207 is a manufacturer-specific diagnostic trouble code, so its exact meaning varies by make, model, and year. Always confirm it against your vehicle manufacturer's service information before diagnosing or replacing parts.
What does U1207 most likely indicate?
Invalid or Missing Network Data (Ford/GM enhanced comms). Treat this as a general guide and verify the specifics for your vehicle.
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