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Code

P0123

Throttle

Throttle position sensor circuit high input

The throttle position signal is too high.

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Most likely causes

Faulty TPS
Open wiring
Bad reference voltage

Symptoms you may notice

Check engine light
Limp mode
Poor response

Checks to run

Read TPS live
Test reference voltage
Inspect wiring

Tools you may need

OBD-II scanner Multimeter

Always diagnose before replacing. Codes share symptoms; confirm the cause with measurements before buying parts.

Related codes in Throttle

Throttle position sensor / pedal circuit malfunction

Throttle position sensor range / performance problem

Throttle position sensor B circuit malfunction

Throttle actuator control range / performance

Throttle actuator control motor circuit range / performance

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