AutoCodes – Generic – U0594

U0594 Code - Invalid Data Received From Hybrid Powertrain Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Hybrid Powertrain Control Module, Hybrid Powertrain Control Module harness is open or shorted, Hybrid Powertrain Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U0594 indicates Invalid Data Received From Hybrid Powertrain Control Module.
Common causes: Common causes include Faulty Hybrid Powertrain Control Module, Hybrid Powertrain Control Module harness is open or shorted, Hybrid Powertrain Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 8,110

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code U0594 Description

A 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 Hybrid Powertrain Control Module causing its integrity to be questioned.

OBDII Code U0594 - Invalid Data Received From Hybrid Powertrain Control Module - AutoCodes.com — U0594 Code - Invalid Data Received From Hybrid Powertrain Control Module

What does this mean?

What are the Possible Causes of the DTC U0594?

Faulty Hybrid Powertrain Control Module
Hybrid Powertrain Control Module harness is open or shorted
Hybrid Powertrain Control Module circuit poor electrical connection

How to Fix the DTC U0594?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0594 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Information for Specific Makes

U0594 Buick — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Cadillac — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Chevrolet — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Chrysler — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Dodge — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Ford — Invalid Data Received From Hybrid Powertrain Control Module
U0594 GMC — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Jeep — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Lincoln — Invalid Data Received From Hybrid Powertrain Control Module
U0594 Mercury — Invalid Data Received From Hybrid Powertrain Control Module
U0594 RAM — Invalid Data Received From Hybrid Powertrain Control Module

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.