U0155 A module has stopped hearing from the instrument cluster
4 owner reports and 214 manufacturer filings across 63 model years from Acura, Buick, Cadillac, Chevrolet and others.
Where U0155 shows up
Source: NHTSA manufacturer communications and complaintsShowing the 25 model years where U0155 appears most; it is on file for 63 in total.
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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U0155 by make
The same record, one make at a time: the model years, bulletins and owner reports that name U0155 on that maker’s vehicles.
What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Unable to open doors with manual key after U0155 error code (lost comms with Isttument panel control cluster) and "emissions problem
Check engine Code U0155 which one of these parts that could potentially fall under this code had been replaced under warranty
214 manufacturer filings name U0155. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names U0155.
- 9100641 Service bulletin2025-08-05 · Power Train
- Symptoms/Condition: Shifter reports loss communication AND NO OTHER MODULES report the condition. Diagnostic: Please make sure ONLY shifter reports loss communication. If there are other modules reporting loss communication, then follow the existing service procedure Repair Procedure: 1. Verify Complaint - ESM reports a Loss of Communication (LOC) DTC, but no other modules do. - If multiple module
- 21-NA-054 Service bulletin2024-04-22 · Electrical System
- This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155.
- 21-NA-054 Service bulletin2024-03-22 · Electrical System — Instrument Cluster/Panel
- This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155.
- S2308000122 Service bulletin2023-10-04 · Engine And Engine Cooling — Engine — Crank/Camshaft Position Sensor
- Vehicle is a no crank/no start with the following DTCs, as well as a no crank/no start condition: U0164, U0140, U0151, U0155
- 21-NA-054 Service bulletin2023-02-06 · Electrical System — Instrument Cluster/Panel
- This service bulletin provides repair information to correct various functional concerns of the Instrument Cluster and DTC U0155.
- 22-NA-186 Service bulletin2022-10-27 · Electrical System
- This service bulletin provides repair information to correct a customer concern of Instrument Cluster Concerns and/or DTC U0155 Set.
What U0155 means
Source: SAE J2012 / OBD-IIA module has stopped hearing from the instrument cluster.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about U0155
Source: NHTSA files and the OBD-II standardCan I keep driving with U0155 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.