U0151

Lost Communication With Restraints Control Module

U0151 is a generic OBD-II network diagnostic trouble code: Lost Communication With Restraints Control Module. It is logged by the engine control unit when the network monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
U0151
Group
Network
System
Network
Severity
Critical (limp mode / no-start)
Need U0151 disabled?
RaceTune permanently disables any OBD-II trouble code on supported ECUs — for motorsport, off-road, and export use.
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Detailed reference content for U0151 is being prepared. What you see above — the code's group, system, and the software disable option below — is accurate and complete; the long-form explainer, common causes, symptoms, and diagnostic steps will appear here once they have been reviewed.

Vehicles where we've handled U0151

Platforms in our catalogue with confirmed U0151 coverage.

AUDI SQ7
2017
AUDI SQ8
2020
AUDI A6
2015
AUDI SQ7 40D
2017
AUDI SQ8 40D
2020
AUDI A4
2019
MB VITO 20TD
AUDI A7

Related network codes

Disabling U0151 in software

RaceTune can permanently disable U0151 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

ECU families we can disable U0151 on

We hold the DaVinci A2L disable definitions for these families, so the exact U0151 path and mask addresses are mapped. verified marks a confirmed disable definition. We support many more — upload your file and our identifier will match it automatically.

  • Bosch EDC17C74 verified
  • Bosch EDC17CP44 verified
  • Bosch EDC17CP54 verified
  • Bosch MD1CP001 verified
  • Bosch MD1CP014 verified

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

Got U0151 in your scan?

Upload your ECU file — we'll identify the exact software version and confirm whether a disable is available for your car.

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