Lock-Up Clutch Not Engaging


Table of contents

P1790 Possible Causes

  • Faulty Throttle Position (TP) Sensor
  • Throttle Position (TP) Sensor harness is open or shorted
  • Throttle Position (TP) Sensor circuit poor electrical connection

How do I fix code P1790?

  Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.

Cost of diagnosing the P1790 code

  The cost of diagnosing the P1790 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P1790 Description

  Lock-Up Clutch Not Engaging is the generic description for the P1790 code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information about the P1790 OBDII code.Still have questions? Please post your question on our Comments Section below for more information.

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