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 LX 470. However, it is still accessible from the selected car via links, so may be relevant.
Code Definition
- P0120: Throttle/Pedal Position Sensor/Switch "A" Circuit Malfunction
- 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 Correction
NOTE:
For information on engine immobilizer system, see COMPUTERIZED ENGINE CONTROLS
in THEORY & OPERATION article.
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.
NOTE:
If DTCs P0110, P0115 and P0120 are output together, check ground circuit E2 (Brown/White wire). Repair as necessary. See ENGINE PERFORMANCE
in SYSTEM WIRING DIAGRAMS article in ELECTRICAL.