P2135 — Throttle/Pedal Position Sensor Voltage Correlation

P2135 means throttle/pedal position sensor voltage correlation. The two throttle position sensors disagree with each other. Drive-by-wire systems use redundant sensors for safety — whe

Fix soon

Drive gently and get it diagnosed within days.

What it means

The two throttle position sensors disagree with each other. Drive-by-wire systems use redundant sensors for safety — when they disagree, the computer limits power to protect you.

Most likely causes, ranked

  1. Failing throttle position sensor

    One of the pair drifting.

  2. Wiring fault

    Corrosion causing signal mismatch.

  3. Throttle body fault

    Mechanical/electrical.

  4. Connector issue

    Moisture intrusion.

  5. Computer fault

    Rare.

Typical repair cost

Typically $150–$600

Sensor/throttle body replacement typically $200–$600. Estimates vary by vehicle. Costs are estimates and vary by vehicle, location, and shop.

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Common questions

Is P2135 serious?

The car will likely be in reduced-power mode — it's protecting you. Drive gently to a shop; avoid highways.

How much does it cost to fix P2135?

Typically $150–$600. Sensor/throttle body replacement typically $200–$600. Estimates vary by vehicle.

Can I drive with P2135?

Drive gently and get it diagnosed within days.

What causes P2135?

The most common cause is failing throttle position sensor. One of the pair drifting.

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