C1477 - High Pressure Hydraulic Circuit Leakage Plausibility Failure

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

C1477 Possible Causes

  • Brake System Bleeding
  • Faulty Hydraulic Control Unit (HCU)
  • Hydraulic Control Unit (HCU) harness is open or shorted
  • Hydraulic Control Unit (HCU) circuit poor electrical connection

How do I fix code C1477?

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 C1477 code

Labor: 1.0

The cost of diagnosing the C1477 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

  • Anti-Lock Brake System (ABS) Warning Light ON
  • Engine Light ON (or Service Engine Soon Warning Light)

C1477 Description

The Hydraulic Control Unit (HCU) monitors the High Pressure Hydraulic Circuit. The HCU sets the OBDII code when the High Pressure Hydraulic Circuit is not to factory specifications.
OBDII Code C1477 - High Pressure Hydraulic Circuit Leakage Plausibility Failure - AutoCodes.com

More Information

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Information for specific makes

  • C1477 CHRYSLER Transfer Case Clutch Over Temperature
  • C1477 DODGE Transfer Case Clutch Over Temperature
  • C1477 FORD High Pressure Hydraulic Circuit Leakage Plausibility Failure
  • C1477 JEEP Transfer Case Clutch Over Temperature
  • C1477 LINCOLN High Pressure Hydraulic Circuit Leakage Plausibility Failure
  • C1477 MERCURY High Pressure Hydraulic Circuit Leakage Plausibility Failure

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