DTC P0120, DTC P0122, DTC P0123, DTC P0220, DTC P0222, DTC P0223 Or DTC P2135: Notes
WARNING: This page is about a different car, the 2003 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. If ECM is replaced, ECM must be programmed with proper ignition key code for engine immobilizer system. For programming procedures, see COMPUTER RELEARN PROCEDURES - LEXUS
article in GENERAL INFORMATION.
NOTE:
When a malfunction is detected, throttle valve is locked at a certain opening angle. Also, all electronically controlled throttle operation is canceled until system returns to normal and ignition switch is turned off.
Code Definition
- P0120: Throttle/Pedal Position Sensor/Switch "A" Circuit
- P0122: Throttle/Pedal Position Sensor/Switch "A" Circuit Low Input
- P0123: Throttle/Pedal Position Sensor/Switch "A" Circuit High Input
- P0220: Throttle/Pedal Position Sensor/Switch "B" Circuit
- P0222: Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input
- P0223: Throttle/Pedal Position Sensor/Switch "B" Circuit High Input
- P2135: Throttle/Pedal Position Sensor/Switch "A/B" Voltage Correlation