P0123 - Throttle/Pedal Position Sensor/Switch A Circuit High Input

TPS/APP signal high.

Code Overview

TPS/APP signal high.

Common Causes

• Open circuit
• Short to voltage
• Sensor failure

Diagnostic Steps

1. Inspect connector and wiring
2. Verify sensor output and reference

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.