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U0151 fault code: what it means

U0151: Lost communication with the airbag (restraints) module. The airbag light is on and airbags may not work.

Network (communication between modules) · Safety risk

Usual causes, most likely first

  1. airbag module power or fuse fault
  2. connector under the seat or console loose
  3. CAN wiring fault
  4. airbag module failed or removed

U0151 by make

BYD

BYD: lost communication with airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring

Ford

Lost communication with the airbag (restraint) module. Airbag light on.

Usual causes: restraint module power/earth; CAN wiring; failed module

GWM

GWM: lost communication with airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring

Haval

Haval: lost communication with airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring

Holden

Lost communication with the airbag module.

Usual causes: airbag module power/earth; CAN wiring

Hyundai

Lost communication with the airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring; failed module

Isuzu

Lost communication with the airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring

Jeep

Lost communication with the airbag (occupant restraint) controller. Airbag light likely on; listed in a 2019 Cherokee PCM update.

Usual causes: ORC power/ground; CAN wiring/connector; ORC fault; software

Kia

Lost communication with the airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring; failed module

LDV

LDV: lost communication with airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring

Mazda

Lost communication with the airbag (SAS) control module. Airbag light on.

Usual causes: SAS module power or connector; CAN wiring fault; SAS module

MG

MG: lost communication with airbag module. Airbag light on.

Usual causes: airbag module power/earth; CAN wiring

Mitsubishi

SRS (airbag) ECU CAN time-out. Airbag light on.

Usual causes: SRS-ECU power or connector; CAN wiring fault

Subaru

Lost communication with the airbag control module. Airbag light on.

Usual causes: airbag control module power or connector; CAN wiring fault

What the repair usually costs

Not sure what U0151 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.