Back to 2007 Lexus GS 300

2007 LEXUS GS 300

3.0L V6RWDAUTOMATICgas
Repairs0Labor498Torque2471Fluid7DTC855Battery0Maintenance0Recalls0
P2128critical severityPowertrain

Throttle/Pedal Position Sensor/Switch E Circuit High

on 2007 Lexus GS 300 3.0L V6 · RWD

What this code means

High voltage from accelerator pedal position sensor E.

Symptoms

  • Limp mode
  • Check engine light
  • Possible unintended throttle input

Common causes

  • Open ground
  • Short to voltage in harness
  • Failed sensor

Diagnostic steps

  1. Measure sensor E voltage
  2. Check ground circuit
  3. Inspect wiring

Repair notes

Replace accelerator 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 →