What this code means

The PCM has detected an electrical circuit malfunction in the Electronic Throttle System. There is a wiring or connector fault in the circuit between the PCM and the electronic throttle body.

Symptoms

• Check Engine Light
• Reduced engine power
• Throttle response delayed or limited
• ETC warning light

Common causes

• Damaged wiring in ETC harness
• Corroded ETC connector pins
• Poor ground connection for ETC system
• Throttle body connector damage
• Chafed wiring near engine components

Diagnostic steps

1. Inspect ETC wiring harness for chafing, cuts, or heat damage
2. Check all ETC connectors for corrosion or loose pins
3. Test ETC circuit continuity from PCM to throttle body
4. Verify ETC ground connections
5. Check for TSBs related to wiring issues

Repair notes

Repair damaged wiring or connectors in the ETC circuit.

Other Powertrain codes on this vehicle