How much does it cost to fix P0123?

Typical repair cost is $100–$400.

P0123 — TPS High Input

Medium Severity · Engine

OBD-II code P0123 means your vehicle's ECU detected: TPS High Input. Below: causes, step-by-step fixes, and repair cost — free, no signup needed.

Drivable short-term but schedule a diagnosis soon. Prolonged driving can worsen the issue.

Typical Repair Cost

$100–$400

Parts + labor, national average

Severity

Medium

Schedule repair soon

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Common Causes of P0123

Wiring short to power
Failed TPS

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How to Fix Code P0123

Inspect TPS wiring

Replace TPS

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FAQ — Code P0123

What does OBD-II code P0123 mean?

P0123 means your vehicle's onboard computer detected: TPS High Input. This is a medium-severity code in the Engine category.

How much does it cost to fix code P0123?

Typical repair cost for P0123 is $100–$400 including parts and labor. Costs vary by vehicle make, model, and location. A free scan at AutoZone or O'Reilly is a good first step.

Can I drive my car with code P0123?

Code P0123 is generally safe for short trips, but have it diagnosed soon to prevent the problem from worsening.

What are the most common causes of P0123?

The most common causes are: Wiring short to power, Failed TPS. Always start with the cheapest diagnosis step before replacing parts.

Will code P0123 clear itself?

Code P0123 will clear itself after the underlying issue is fixed and the ECU completes several successful drive cycles. Clearing it without fixing the root cause only masks the problem temporarily.

Is P0123 showing on your car?

Enter your VIN for a free vehicle-specific report — recalls, specs, and market value. No signup required.

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OBD-II code data is based on SAE J2012 standards and general repair industry data. Repair costs are national averages and vary by vehicle, location, and shop. Always consult a qualified mechanic for a diagnosis specific to your vehicle.