AutoCodesSaturn – P1AF8 Saturn

P1AF8 Saturn Code - Drive Motor 1 Control Module Shutdown Performance

Quick Answer

The drive motor generator Power Inverter Control Module (PIM) contains two Motor Control Modules (MCMs) and the Hybrid Powertrain Control Module (HPCM). Common causes include Faulty Drive Motor Generator, Drive Motor Generator harness is open or shorted, Drive Motor Generator 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
P1AF8 Saturn indicates Drive Motor 1 Control Module Shutdown Performance.
Common causes
Common causes include Faulty Drive Motor Generator, Drive Motor Generator harness is open or shorted, Drive Motor Generator 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 843
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 05, 2020
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Code P1AF8 Saturn Description

The drive motor generator Power Inverter Control Module (PIM) contains two Motor Control Modules (MCMs) and the Hybrid Powertrain Control Module (HPCM). Each MCM operates its respective drive motor generator based upon HPCM commands. Each MCM controls the speed, direction and output torque of its respective drive motor generator through the sequencing actuation of high current switching transistors called insulated gate bipolar transistors (IGBTs). Each drive motor generator operates utilizing 3 phase Alternating Current (AC) electricity. Each IGBT operates a single phase of the drive motor generator. Each phase is individually identified as U, V and W. Each MCM monitors the current of each phase in order to detect PIM overcurrent conditions.
When high voltage is enabled, each MCM supplies its respective drive motor generator with just enough current to energize the magnetic field even when no motor generator torque is required. The MCM monitors the phase current sensors for this minimal current to ensure the drive motor phase circuits are functioning properly.

OBDII Code P1AF8 Saturn - Drive Motor 1 Control Module Shutdown Performance - AutoCodes.com
P1AF8 Saturn Code - Drive Motor 1 Control Module Shutdown Performance

What are the Possible Causes of the DTC P1AF8 Saturn?

  • Faulty Drive Motor Generator
  • Drive Motor Generator harness is open or shorted
  • Drive Motor Generator circuit poor electrical connection

How to Fix the DTC P1AF8 Saturn?

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 P1AF8 Saturn 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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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 P1AF8 Saturn Code

What does the OBDII code P1AF8 mean on a Saturn?

The P1AF8 code indicates an issue with the Drive Motor 1 Control Module, specifically a shutdown performance problem, meaning the module is not functioning as expected during shutdown.

What are common symptoms of the P1AF8 code on a Saturn?

Common symptoms include reduced vehicle performance, electric drive system warnings on the dash, and potential loss of hybrid or electric motor functionality.

What causes the P1AF8 code to appear?

The code can be triggered by issues like a faulty Drive Motor 1 Control Module, wiring problems, software glitches, or internal electrical failures in the control module.

How can I diagnose the P1AF8 code?

Diagnosis involves scanning for codes, inspecting the wiring and connectors for damage or corrosion, and testing the Drive Motor 1 Control Module for proper operation.

Can I still drive my Saturn with the P1AF8 code?

It is not recommended to drive the vehicle extensively with this code, as it can lead to reduced performance or further damage to the electrical or hybrid system.

How is the P1AF8 code typically repaired?

Repairs may include replacing or reprogramming the Drive Motor 1 Control Module, repairing damaged wiring, or updating the vehicle’s software.

Is the P1AF8 code specific to Saturn vehicles?

While the code is most commonly associated with Saturn hybrid or electric vehicles, it may apply to other GM vehicles with similar systems.

How much does it cost to fix the P1AF8 code?

Repair costs vary, but replacing or reprogramming the Drive Motor 1 Control Module can range from $500 to $1,200, depending on parts and labor.

Can a dead battery cause the P1AF8 code?

A weak or dead battery can contribute to the issue, as insufficient voltage can affect the performance of the Drive Motor 1 Control Module.

Do I need to clear the P1AF8 code after repairs?

Yes, after completing repairs, you should clear the code with an OBDII scanner and perform a test drive to ensure the issue is resolved.

Discuss the causes and fixes for P1AF8 Saturn OBDII Code

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