B0138 (blink 72) on Toyota Corolla E120: Short in P/T Squib (LH) Circuit (to B+)

Short answer: B0138 means “Short in P/T Squib (LH) Circuit (to B+)”. 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 INSTRUMENT PANEL WIRE NO.3 -> CHECK AIR BAG SENSOR ASSYCENTER -> CHECK P/T SQUIB (LH).

Code

B0138 · blink 72

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. S Short circuit in seat belt pretensioner (LH) wire harness (to B+) S P/T squib (LH) malfunction S Airbag sensor assembly malfunction

Likely causes

1. Seat belt pretensioner (LH); Airbag sensor assembly; Wire harness

What to check, in order

1. Workshop check order (RM821E): CHECK INSTRUMENT PANEL WIRE NO.3 -> CHECK AIR BAG SENSOR ASSYCENTER -> CHECK P/T SQUIB (LH)

Related on this car

• All fault codes for this car
• Warning lights
• Where the parts are (parts map)
• Common problems

← B0137/71 B1100/31 →

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.