P05BA

Symptoms

• SRS/Airbag light is on
• Check Engine May Be Active
• Possible risk of unintentional system activation
• Increased voltage on the signal wire during diagnostics

Causes

• Shorting the signal wire to the 12 V power wire
• SRS module internal fault (incorrect output signal)
• Damage to the insulation of the harness with contact with the positive bus
• Malfunction in the receiving ECU (incorrect reference voltage)
• Incorrect connection during previous repair

How to Fix

1. CRITICAL: disconnect the battery and wait at least 10 minutes before any work
2. Read codes from the SRS module with a specialized scanner
3. Disconnect the connector and measure the voltage on the signal wire - if it is shorted to positive there will be ~12 V
4. Check the entire signal circuit harness for contact with the power wires.
5. Eliminate short circuit, check insulation
6. Diagnostics and repairs should only be performed by an authorized service center.

Related codes

Error P05BA by Vehicle Brand