CorollaFix

B1158 (blink 16) on Toyota Corolla E120: Front Airbag Sensor (LH) Malfunction

Short answer: B1158 means “Front Airbag Sensor (LH) Malfunction”. The car’s computer has found a fault in the SRS system and turns on the SRS airbag warning. First check: workshop check order (RM821E): CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT (TO B+) -> CHECK FRONT AIRBAG SENSOR(LH) CIRCUIT(TO GROUND) -> CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT(SHORT) -> CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT(OPEN) -> INSPECT AIR BAG SENSOR FRONT LH -> CHECK AIR BAG SENSOR ASSY CENTER -> CHECK ENGINE ROOM MAIN WIRE HARNESS (TO B+) -> CHECK ENGINE ROOM MAIN WIRE HARNESS (TO GROUND) -> CHECK ENGINE ROOM MAIN WIRE HARNESS(SHORT) -> CHECK ENGINE ROOM MAIN WIRE HARNESS(OPEN).

Code
B1158 · blink 16
System
SRS
Dashboard light
SRS airbag warning
Applies to
Cars with airbags (SRS)
Confidence
high (official Toyota RM821E)
Source
toyotamanuals.gitlab.io

Symptoms and when it is set

  1. /B1159/16 S Front airbag sensor (LH) malfunction

Likely causes

  1. Front airbag sensor (LH); Airbag sensor assembly; Wire harness; Engine room main wire harness

What to check, in order

  1. Workshop check order (RM821E): CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT (TO B+) -> CHECK FRONT AIRBAG SENSOR(LH) CIRCUIT(TO GROUND) -> CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT(SHORT) -> CHECK FRONT AIRBAG SENSOR (LH) CIRCUIT(OPEN) -> INSPECT AIR BAG SENSOR FRONT LH -> CHECK AIR BAG SENSOR ASSY CENTER -> CHECK ENGINE ROOM MAIN WIRE HARNESS (TO B+) -> CHECK ENGINE ROOM MAIN WIRE HARNESS (TO GROUND) -> CHECK ENGINE ROOM MAIN WIRE HARNESS(SHORT) -> CHECK ENGINE ROOM MAIN WIRE HARNESS(OPEN)

Related on this car

← B1157/15 B1159/16 →

Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.