AutoCodes – Generic – P0C7A

P0C7A Code - Drive Motor 'B' Inverter Voltage Too High

Quick Answer

The Engine Control Module (ECM) monitors the Drive Motor 'B' Inverter. Common causes include Faulty Drive Motor 'A' Inverter, Drive Motor 'A' Inverter harness is open or shorted, Drive Motor 'A' Inverter 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: P0C7A indicates Drive Motor 'B' Inverter Voltage Too High.
Common causes: Common causes include Faulty Drive Motor 'A' Inverter, Drive Motor 'A' Inverter harness is open or shorted, Drive Motor 'A' Inverter 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,673

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 Feb 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0C7A Description

The Engine Control Module (ECM) monitors the Drive Motor 'B' Inverter. The ECM sets the OBDII code when the Drive Motor 'B' Inverter is not to factory specifications.

OBDII Code P0C7A - Drive Motor 'B' Inverter Voltage Too High - AutoCodes.com — P0C7A Code - Drive Motor 'B' Inverter Voltage Too High

What does this mean?

What are the Possible Causes of the DTC P0C7A?

Faulty Drive Motor 'A' Inverter
Drive Motor 'A' Inverter harness is open or shorted
Drive Motor 'A' Inverter circuit poor electrical connection

How to Fix the DTC P0C7A?

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 P0C7A 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.

Need more information about the P0C7A code?

Need more information on how to fix the P0C7A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0C7A code diagnosed by a professional: Find a repair shop in your area

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.