What causes C1242 on a Toyota?

Weak or faulty battery Charging system fault Faulty master cylinder solenoid

How do I fix C1242 on a Toyota?

Confirm the code with a scan tool Check battery voltage and the charging system Inspect the ECU connectors and wiring Test the affected circuit for opens and shorts Replace the ECU only after the circuit tests fail Clear the code and retest

C1242 The skid control ECU saw a fault in its IG2 power supply circuit

Q: What does C1242 mean on a Toyota?

C1242. The skid control ECU saw a fault in its IG2 power supply circuit. ABS and brake assist are disabled and the ABS warning light comes on.. Applies to Toyota, Lexus and Scion models that use this code.

Category: Chassis
Severity: ABS Light
Applies to: Toyota, Lexus and Scion models that use this code

What does C1242 mean on a Toyota?

C1242. The skid control ECU saw a fault in its IG2 power supply circuit. ABS and brake assist are disabled and the ABS warning light comes on.. This Toyota-enhanced code applies to Toyota, Lexus and Scion models that use this code.

Common causes of C1242

Weak or faulty battery
Charging system fault
Faulty master cylinder solenoid

How to fix C1242

Confirm the code with a scan tool
Check battery voltage and the charging system
Inspect the ECU connectors and wiring
Test the affected circuit for opens and shorts
Replace the ECU only after the circuit tests fail
Clear the code and retest