Fault Code Lookup › Network codes › U1611
U1611 Network · manufacturer code
U1611 fault code: what 4 owners reported
U1611 is a manufacturer-specific network code (network: communication between the car's control modules), so its exact definition belongs to the carmaker and is not in the generic OBD-II list. What it meant in practice is below, from 4 complaints owners filed with NHTSA. Updated November 9, 2026.
- 4owner reports
- 3car models
- 0mention a crash
- 0mention a fire
- 2022–2025model years
Which cars get code U1611?
Every model whose owners mentioned U1611 in a complaint, most reports first. Each year opens that car's full problem report. Popular models collect more reports because more of them are on the road.
Where does U1611 show up?
By brand
- Chevrolet2
- GMC2
Component the owner filed it under
Is there a recall for U1611?
As of November 9, 2026, no NHTSA recall on the cars reporting U1611 names this code or its most-reported component. Recalls can be issued at any time: check your VIN at nhtsa.gov/recalls.
What happened when owners saw U1611?
4 of the 4 reports, spread across the models above, as the owners wrote them. NHTSA removes names and VINs; long reports are trimmed. CarHooq has not verified individual claims.
…Diagnostic codes reported: B1A68 (0x76), U0101, U0102, U0131, U0140, U0146, U0151, U0155, U0265, U0422, U160F, U1610, U1611. I am concerned that replacing the front camera may not correct the actual cause of the missing guide lines, particularly given the multiple communication faults. This could involve the camera system, software, calibration, CAN communication network, or another component. I am requesting that NHTSA document and investigate this complaint as a potential safety-related defect affecting the camera/guide-line system on 2022 Chevrolet Silverado vehicles. I believe the loss of the factory guide lines is a safety concern and could affect a driver's ability to safely judge the…
…Control Module; U0131 Lost Communication with Power Steering Control Module; U0140 Lost Communication with Body Control Module; U0146 Lost Communication with Central Gateway Module; U160F Lost Communication with Brake System Control Module 1 on CAN Bus 1; U1611 Lost Communication with Engine Control Module on CAN Bus 2; and U3003 Battery Voltage Circuit Voltage Below Threshold. The vehicle had approximately 22,000 miles at the time of the incident. The failure has not been repaired at the time of this complaint. The concern appears to involve a safety-related electrical, propulsion, powertrain, ESC/brake, and module communication failure that caused sudden loss of propulsion, no acceleration…
The brake system control module, engine control module, and vehicle stability control system have repeatedly failed across 24 months and 9 repair attempts at two authorized GMC dealerships in Tennessee. As of March 17, 2026 the vehicle has 27 active diagnostic fault codes including U160F and U1610 (brake system control module lost communication on both CAN buses), U1611 (engine control module lost communication), and C2A0A (vehicle stability control disabling inhibited). All components are available for inspection at Beaman GMC in Antioch, Tennessee where the vehicle currently remains in an undrivable condition. Safety risk: Vehicle has stalled on the highway with my family including young…
…The contact was informed that DTC: U1611 was retrieved, and several unknown repairs were needed. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 23,000.
U1611: questions drivers ask
What does code U1611 mean?
U1611 is a manufacturer-specific network code (network: communication between the car's control modules), so its exact definition depends on the carmaker and is not in the generic OBD-II list. 4 owners reported it to NHTSA, most often for the Chevrolet Silverado (2), GMC Sierra (1), GMC Yukon (1); their reports describe what happened.
Which cars get code U1611 most often?
In NHTSA owner complaints, U1611 is mentioned most for the Chevrolet Silverado (2), GMC Sierra (1), GMC Yukon (1), across 3 models and model years 2022 to 2025. Popular models collect more reports because more of them are on the road.
Is there a recall for code U1611?
As of November 2026, no NHTSA recall on the cars reporting U1611 names this code or its most-reported component. Recalls can be issued at any time, so check your VIN at nhtsa.gov/recalls.
What should I do if my car shows U1611?
Write down when the code appeared and what the car did (warning lights, loss of power, noises, speed, weather). Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer or independent workshop to read the stored freeze-frame data before anyone clears the code, and keep the repair order. If the car loses power in traffic, stop driving it. CarHooq does not diagnose: these are owner reports and official recall notices, not repair advice.
How this page was made
CarHooq read the text of every owner complaint filed with NHTSA for 19 US and European brands (model years 2012 onwards) and picked out the diagnostic trouble codes owners wrote down. This page lists every mention of U1611. Manufacturer codes have no public standard definition, so CarHooq shows only what owners reported. Nothing here is a diagnosis. More answers: the fault code FAQ. Data: NHTSA Office of Defects Investigation (public domain), retrieved November 9, 2026. How CarHooq reports are made.
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