Intermediate Shaft Speed Sensor ‘A’ Circuit


Table of contents

P0791 AUDI Possible Causes

  • Faulty Intermediate Shat Speed Sensor ‘A’
  • Intermediate Shat Speed Sensor ‘A’ harness is open or shorted
  • Intermediate Shat Speed Sensor ‘A’ circuit poor electrical connection

How do I fix code P0791 AUDI?

  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 P0791 AUDI code

  The cost of diagnosing the P0791 AUDI 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.

When is the code detected

  P0791 code is detected when the input speed sensor voltage is more than 1.9V or less than 0.1V for 2 seconds or more

Possible Symptoms

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

P0791 AUDI Description

  This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT) with the counter gear speed sensor signal (NC), the Engine Control Module (ECM) detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions. Thus, providing smooth gear shift.

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