U0420 GMC - Invalid Data Received From Power Steering Control Module
U0420 GMC Possible Causes
- Faulty Power Steering Control Module
- Power Steering Control Module harness is open or shorted
- Power Steering Control Module circuit poor electrical connection
How is the U0420 GMC code repair?Start by checking 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.
What is the cost to diagnose the U0420 GMC code
Labor: 1.0The cost to diagnose the U0420 GMC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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- Engine Light ON (or Service Engine Soon Warning Light)
U0420 GMC MeaningA Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. Some devices are constantly receiving information from other devices through serial data communication network. The invalid data Diagnostic Trouble Code (DTC) will be set when a receiving device detects a discrepancy in the information it receives from the Power Steering Control Module causing its integrity to be questioned.
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