C1478 - Front Left Wheel Brake Pressure Control Plausibility Failure
C1478 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
First diagnose C1478 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 connector's pins.
Cost of diagnosing the C1478 code
Labor: 1.0The cost of diagnosing the C1478 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.
C1478 Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C1478 DescriptionThe Hydraulic Control Unit (HCU) monitors the Front Left Wheel Brake Pressure. The HCU sets the OBDII code when the Front Left Wheel Brake Pressure is not to factory specifications.
C1478 More InformationNeed more information on how to fix the C1478 code?
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C1478 Information for specific makes
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