U0178

Lost Communication With Restraints System Sensor I

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$56–167 (est.)

Symptoms

SRS/Airbag light is on
Security error message on display
Airbags may not deploy in a crash
Seat belt pretensioners do not work
The system may log additional related codes

Causes

Broken or damaged wiring to the sensor
Oxidation of contacts in security system connectors
Malfunction of the security system sensor itself
Problems with the SRS control unit
Short circuit in the sensor circuit

How to Fix

Carry out diagnostics with a scanner that supports the SRS system
Check the integrity of the wiring and connectors of the sensor
Measure the resistance and voltage in the sensor circuit
If necessary, replace the security sensor
Repair only from an authorized dealer

Related codes

U0179 U0180 B0020