C2328 - Rear Left Outlet Valve Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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C2328 Possible Causes

  • Faulty Hydraulic Electronic Control Unit (HECU)
  • Hydraulic Electronic Control Unit (HECU) harness is open or shorted
  • Hydraulic Electronic Control Unit (HECU) circuit poor electrical connection

First diagnose C2328 code

    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 terminals.

Cost of diagnosing the C2328 code

    Labor: 1.0

    The cost of diagnosing the C2328 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.

C2328 Possible Symptoms

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

C2328 Description

The Hydraulic Electronic Control Unit (HECU) is composed of an ECU (Electronic Control Unit) and an HCU (Hydraulic Control Unit), so the HECU hardware includes all solenoid valves inside the unit as well as the ECU. The solenoid valves are switched to ON, OFF by HECU when the Anti-Lock Brake System (ABS) is activated. The solenoid valves function is to increase, decrease or maintain the hydraulic pressure supplied to a wheel cylinder. The HECU sets the OBDII code when the solenoid valves are not to function to factory specifications.
OBDII Code C2328 - Rear Left Outlet Valve Malfunction - AutoCodes.com

C2328 More Information

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C2328 Information for specific makes

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