U0155 code meaning
Lost Communication With Instrument Panel Cluster (IPC) Control Module
Network system Generic code U01xx codes Check engine light
What U0155 means
U0155 says a listener no longer receives the instrument cluster, which shows speed and warnings and on many cars also produces chimes and turn-signal ticks. The cause is not always the cluster: on 2017 GM full-size trucks and SUVs several modules logged U0155 when the serial data gateway hung, so dead gauges came from the gateway (PIT5586G). The code can also trigger the MIL. Honda's 2021 Accord and HR-V and 2022 Odyssey lit it with U0155 after the evaporative leak check, when shutdown commands between units did not match; new engine software fixed it (21-021). Ford's 2020 Explorer showed MIL and wrench lamp with U0155 and U0100 due to gear shift module software (SSM 49218). FCA writes Cluster/CCN, Saab Instrument Cluster. U0423 covers invalid cluster data, U0156 the information center.
U0155 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.3 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0155
- Gauges dead, frozen or sweeping
- No chimes or turn-signal ticking
- MIL on in some vehicles (Honda 2021-22, Ford Explorer 2020)
- Several warning lamps and codes in many modules
Common causes of U0155
- Most likelyCluster fuse, ground or connector behind the dash faulty
- PossibleGateway hangs and stops forwarding cluster messages (GM PIT5586G)
- PossibleSoftware of another module causes false loss of communication (Honda 21-021, Ford SSM 49218)
- Less likelyInstrument cluster internally faulty
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Instrument clusterCAN bus wiring
What each part of U0155 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 55 | The exact fault in that area. |
What to do next
- Note U0155 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0155
What does U0155 mean?
U0155 means "Lost Communication With Instrument Panel Cluster (IPC) Control Module". U0155 says a listener no longer receives the instrument cluster, which shows speed and warnings and on many cars also produces chimes and turn-signal ticks. It is a generic code, so it means the same on every make.
Is it safe to drive with U0155?
Usually yes, for a short time, if the check engine light is steady and the car drives normally. If the light flashes or the car runs badly, stop and have it checked.
Will U0155 fail an emissions test?
U0155 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0155 to fix?
Difficulty: medium. A typical repair takes 0.3 to 4 hours of work. This is a job for a workshop.
Will U0155 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.