Back to 2003 Mitsubishi Colt JP

2003 MITSUBISHI COLT JP

1.3L I4 4A90FWDAUTOMATICgas
Repairs0Labor595Torque467Fluid6DTC688Battery0Maintenance0Recalls0
P2123critical severityPowertrain

Throttle/Pedal Position Sensor/Switch D Circuit High

on 2003 Mitsubishi Colt JP 1.3L I4 4A90 · FWD

What this code means

High voltage from accelerator pedal position sensor D.

Symptoms

  • Limp mode
  • Unintended acceleration
  • Check engine light

Common causes

  • Open ground circuit
  • Short to voltage
  • Failed sensor

Diagnostic steps

  1. Measure voltage at APP sensor D
  2. Check for opens in ground
  3. Inspect wiring

Repair notes

Replace pedal assembly or repair wiring.

Other Powertrain codes on this vehicle

Building an app?
Free API access to all this data — 50 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →