AutoCodes – Generic – P0C0B

P0C0B Code - Drive Motor '1' Inverter Positive Voltage Circuit

Quick Answer

This is an internal fault detection of the drive motor generator Power Inverter Module (PIM) Assembly. Common causes include Reprogram Power Inverter Module (PIM) Assembly, Faulty Power Inverter Module (PIM) Assembly, Power Inverter Module (PIM) Assembly harness is open or shorted. 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: P0C0B indicates Drive Motor '1' Inverter Positive Voltage Circuit.
Common causes: Common causes include Reprogram Power Inverter Module (PIM) Assembly, Faulty Power Inverter Module (PIM) Assembly, Power Inverter Module (PIM) Assembly harness is open or shorted.
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 5,299

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 Nov 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0C0B Description

This is an internal fault detection of the drive motor generator Power Inverter Module (PIM) Assembly. The PIM monitors the Drive Motor '1' Inverter. The ECM sets the OBDII code when the Drive Motor '1' Inverter is not to factory specifications. This fault is handled inside the PIM and no external circuits are involved.

OBDII Code P0C0B - Drive Motor '1' Inverter Positive Voltage Circuit - AutoCodes.com — P0C0B Code - Drive Motor '1' Inverter Positive Voltage Circuit

What does this mean?

What are the Possible Causes of the DTC P0C0B?

Reprogram Power Inverter Module (PIM) Assembly
Faulty Power Inverter Module (PIM) Assembly
Power Inverter Module (PIM) Assembly harness is open or shorted
Power Inverter Module (PIM) Assembly circuit poor electrical connection

How to Fix the DTC P0C0B?

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 P0C0B 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 P0C0B code?

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Information for Specific Makes

P0C0B Buick — Drive Motor '1' Inverter Positive Voltage Circuit
P0C0B Cadillac — Drive Motor '1' Inverter Positive Voltage Circuit
P0C0B Chevrolet — Drive Motor '1' Inverter Positive Voltage Circuit
P0C0B GMC — Drive Motor '1' Inverter Positive Voltage Circuit

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.