AutoCodes – Generic – P1ADF

P1ADF Code - Drive Motor 1 Control Module System Voltage High

Quick Answer

The Drive Motor Generator Power Inverter Control Module contains three motor control modules and the hybrid powertrain control module. Common causes include Faulty Drive Motor Generator Power Inverter Control Module, Drive Motor Generator Power Inverter Control Module harness is open or shorted, Drive Motor Generator Power Inverter 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: P1ADF indicates Drive Motor 1 Control Module System Voltage High.
Common causes: Common causes include Faulty Drive Motor Generator Power Inverter Control Module, Drive Motor Generator Power Inverter Control Module harness is open or shorted, Drive Motor Generator Power Inverter 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 3,439

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 Mar 01, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1ADF Description

The Drive Motor Generator Power Inverter Control Module contains three motor control modules and the hybrid powertrain control module. Two of the motor control modules operate their respective drive motor generator based upon drive motor generator power inverter control module commands. The third motor control module controls the auxiliary transmission fluid pump motor. The hybrid powertrain control module and the motor control modules share the drive motor generator power inverter module ignition voltage circuit, battery voltage circuits and chassis ground.

OBDII Code P1ADF - Drive Motor 1 Control Module System Voltage High - AutoCodes.com — P1ADF Code - Drive Motor 1 Control Module System Voltage High

What does this mean?

What are the Possible Causes of the DTC P1ADF?

Faulty Drive Motor Generator Power Inverter Control Module
Drive Motor Generator Power Inverter Control Module harness is open or shorted
Drive Motor Generator Power Inverter Control Module circuit poor electrical connection

How to Fix the DTC P1ADF?

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 P1ADF 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 P1ADF code?

Need more information on how to fix the P1ADF code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Makes

P1ADF Buick — Drive Motor 1 Control Module System Voltage High
P1ADF Cadillac — Drive Motor 1 Control Module System Voltage High
P1ADF Chevrolet — Drive Motor 1 Control Module System Voltage High
P1ADF GMC — Drive Motor 1 Control Module System Voltage High
P1ADF Saturn — Drive Motor 1 Control Module System Voltage High

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.

Frequently Asked Questions about P1ADF Code

What does the OBDII code P1ADF mean?

The P1ADF code indicates that the drive motor 1 control module has detected a system voltage that is higher than normal, which can lead to potential issues with the vehicle's hybrid or electric drive system.

What are common symptoms of the P1ADF code?

Common symptoms may include warning lights on the dashboard, reduced power from the electric motor, erratic vehicle behavior, or complete loss of propulsion in hybrid or electric vehicles.

What could cause the P1ADF code to trigger?

Potential causes include a malfunctioning drive motor control module, high voltage from the battery pack, issues with wiring or connectors, or a defective battery management system.

How can I diagnose the P1ADF code?

To diagnose the P1ADF code, use an OBDII scanner to confirm the code, check for related codes, inspect wiring and connectors for damage, and test the voltage levels at the motor control module and battery pack.

What repairs might be necessary for the P1ADF code?

Repairs may involve replacing the drive motor control module, repairing damaged wiring or connectors, replacing a faulty battery pack, or recalibrating the battery management system.

Can I drive my car with the P1ADF code?

It is not advisable to drive the vehicle with the P1ADF code active, as it may lead to further damage to the drive system or result in a complete loss of power.

Is the P1ADF code specific to hybrid or electric vehicles?

Yes, the P1ADF code is primarily associated with hybrid or electric vehicles, as it pertains to the drive motor control system used in these types of vehicles.

Will clearing the P1ADF code fix the problem?

Clearing the code may temporarily turn off the warning lights, but if the underlying issue is not addressed, the code will likely return, and the symptoms may persist.

How can I prevent the P1ADF code from reoccurring?

To prevent the P1ADF code from reoccurring, ensure regular maintenance of the vehicle's electrical system, monitor battery health, and promptly address any electrical issues as they arise.