AutoCodes – Generic – P1ADD

P1ADD Code - Drive Motor 2 Control Module Long Term Memory Performance

Quick Answer

The drive motor control modules are internal to the Power Inverter Module, often referred to as the drive motor-generator Power Inverter Module, and are not serviced separately. Common causes include Faulty Power Inverter Module (PIM), Power Inverter Module (PIM) harness is open or shorted, Power Inverter Module (PIM) 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: P1ADD indicates Drive Motor 2 Control Module Long Term Memory Performance.
Common causes: Common causes include Faulty Power Inverter Module (PIM), Power Inverter Module (PIM) harness is open or shorted, Power Inverter Module (PIM) 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 1,541

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 Aug 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1ADD Description

The drive motor control modules are internal to the Power Inverter Module, often referred to as the drive motor-generator Power Inverter Module, and are not serviced separately. This fault is handled inside the drive motor control modules and no external circuits are involved. The Diagnostic Trouble Code (DTC) will set when the Power Inverter Module has detected an internal malfunction, or a service module has been installed but not yet programmed.

OBDII Code P1ADD - Drive Motor 2 Control Module Long Term Memory Performance - AutoCodes.com — P1ADD Code - Drive Motor 2 Control Module Long Term Memory Performance

What does this mean?

What are the Possible Causes of the DTC P1ADD?

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

How to Fix the DTC P1ADD?

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 P1ADD 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 P1ADD code?

Need more information on how to fix the P1ADD code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1ADD code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1ADD Buick — Drive Motor 2 Control Module Long Term Memory Performance
P1ADD Cadillac — Drive Motor 2 Control Module Long Term Memory Performance
P1ADD Chevrolet — Drive Motor 2 Control Module Long Term Memory Performance
P1ADD GMC — Drive Motor 2 Control Module Long Term Memory Performance

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 P1ADD Code

1. What does the OBDII code P1ADD mean?

P1ADD indicates an issue with the Drive Motor 2 Control Module's long-term memory performance, often related to data storage or retrieval errors within the module.

2. What are the common symptoms of a P1ADD code?

Common symptoms include illuminated warning lights (like the Check Engine Light or hybrid system warning), reduced vehicle performance, or irregular behavior in the electric drive system.

3. What causes the P1ADD code to appear?

This code can be caused by corrupted long-term memory in the Drive Motor 2 Control Module, software glitches, electrical issues like poor connections, or internal module failure.

4. Can I drive my car with a P1ADD code?

Driving with a P1ADD code is not recommended, as it may lead to reduced performance or potential damage to the hybrid or electric drive system over time.

5. How can I fix the P1ADD code?

Fixing the P1ADD code may involve reprogramming or updating the control moduleâ€™s software, checking and repairing wiring or connections, or replacing the Drive Motor 2 Control Module if necessary.

6. How is the P1ADD code diagnosed?

A technician will use a scan tool to confirm the code, review freeze frame data, inspect wiring and connections, and possibly test the Drive Motor 2 Control Module for proper operation.

7. Is the P1ADD code specific to certain vehicles?

Yes, the P1ADD code is typically found in hybrid or electric vehicles, as it pertains to the Drive Motor 2 Control Module used in such systems.

8. Does clearing the P1ADD code fix the problem?

Clearing the code may temporarily turn off the warning light, but if the underlying issue isn't resolved, the code will likely return.

9. What tools are needed to repair a P1ADD code?

Common tools include an OBDII scanner, multimeter for testing electrical connections, and manufacturer-specific diagnostic software for module reprogramming or updates.

10. How much does it cost to repair a P1ADD code?

Repair costs vary depending on the cause, ranging from $100 for simple wiring repairs to over $1,000 if the control module needs replacement.