P1CBF - Hydraulic Pump Feedback

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

P1CBF Possible Causes

  • Faulty Smart Driver Unit (SDU)
  • Smart Driver Unit (SDU) harness is open or shorted
  • Smart Driver Unit (SDU) circuit poor electrical connection
  • Faulty Transmission Control Module (TCM)

How do I fix code P1CBF?

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 P1CBF code

Labor: 1.0

The cost of diagnosing the P1CBF 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)

P1cbf Description

This diagnostic checks the performance of the hydraulic pump. The Smart Driver Unit (SDU) which is external to the Transmission Control Module (TCM) drives the hydraulic pump based upon a PWM command signal received from the Transmission Control Module (TCM). This diagnostic uses three feedback signals. The PWM driver, internal to TCM, returns a command feedback signal. The SDU returns to the TCM the hydraulic pump driver feedback signal. The TCM separately receives the hydraulic pump feedback signal confirming the pump state. This diagnostic checks the performance of the hydraulic pump.
OBDII Code P1cbf - Hydraulic Pump Feedback - AutoCodes.com

P1CBF More Information

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