OBD-II Generic Error Code P2164: Throttle Position Sensor B High Stop Performance – How to Fix It

Medium 45 minutes to 1.5 hours Medium Severity Verified June 2026
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Error Code
P2164
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
45 minutes to 1.5 hours
Error code P2164 indicates that the Engine Control Module (ECM) has detected the throttle position sensor B signal is at a higher voltage than expected at the idle stop. This usually points to a faulty throttle position sensor, wiring issues, or a problem with the throttle body. The fix ranges from cleaning the throttle body to replacing the sensor.
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Tools You'll Need

How to Fix Error Code P2164

  1. Safety First: Prepare the Vehicle

    Always disconnect the battery before working on electronic components.

  2. Locate the Throttle Position Sensor (TPS)

  3. Inspect Wiring and Connector

    Do not pull on the wires; disconnect by the connector body.

  4. Test TPS Voltage with Multimeter

    Be careful not to short probe leads. Reconnect battery only when testing.

  5. Clean Throttle Body

    Do not use harsh abrasives; avoid getting cleaner on electrical connectors.

  6. Replace Throttle Position Sensor B

  7. Perform Throttle Position Relearn (if needed)

    Check vehicle repair manual for specific relearn steps.

  8. Clear DTC and Test Drive

Parts You May Need

Throttle Position Sensor B
Check Price on Amazon
Throttle body gasket
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Throttle Position Sensor B
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Throttle body gasket
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Throttle Position Sensor B
Check Price on Amazon
Throttle body gasket
Check Price on Amazon
Throttle Position Sensor B
Check Price on Amazon
Throttle body gasket
Check Price on Amazon
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When to Call a Professional

If after replacing the TPS and checking wiring the code returns, or if the engine has drivability issues like stalling or no response, have a professional mechanic diagnose the ECM or throttle body actuator.

Frequently Asked Questions

Can I drive with code P2164?
It's not recommended for long distances. The vehicle may have reduced power, poor acceleration, or enter limp mode. Have it repaired soon to avoid further issues.
Is P2164 a serious error?
It is moderately serious. It affects throttle operation and can cause unsafe driving conditions. Fix it promptly.
What causes P2164?
Common causes include a faulty TPS, damaged wiring or connector, carbon buildup on throttle body, or in rare cases a defective ECM.
Will cleaning the throttle body fix P2164?
Sometimes yes, if the issue is due to carbon deposits interfering with the throttle plate or sensor. But if the sensor is faulty, replacement is needed.
What tools do I need to fix P2164?
You'll need an OBD2 scanner, a digital multimeter, and basic hand tools. A throttle body cleaner is helpful for cleaning.

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