AutoCodes – Saturn – P1650 Saturn

P1650 Saturn Code - PCM Output Controls Fault

Quick Answer

The Quad Driver Module (QDM) is an electronic switch that completes a ground circuit when switched on. Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain 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: P1650 Saturn indicates PCM Output Controls Fault.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Powertrain Control Module harness is open or shorted, Powertrain 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 2,378

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 Jan 12, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1650 Saturn Description

The Quad Driver Module (QDM) is an electronic switch that completes a ground circuit when switched on. The QDM independently controls 4 separate outputs. A load is connected between battery voltage and the QDM allowing QDM driver to control the output. Each QDM has a fault detection logic that compares its input and output voltages. The logic expects to measure less than 3 volts when the QDM is on and greater than 7 volts when off. The QDM has only one fault that will detect a fault on any of the 4 outputs. The scan tool can be used to cycle the outputs on and off. It can also perform automated test which can isolate the faulty circuit.
The Diagnostic Trouble Code (DTC) P1650 and P1651 will set if there is an open, short to ground or short to voltage on any of the QDM output circuits, faulty MIL circuit, faulty upshift light circuit, faulty cooling fan relay circuit or A/C relay circuit. Fault detected for 5 seconds will set P1651. Fault detected for 20 seconds will set P1650. The QDM circuit is continuously checked when the engine is running.
The Quad Driver Module (QDM) is part of the Powertrain Control Module (PCM).

OBDII Code P1650 Saturn - PCM Output Controls Fault - AutoCodes.com — P1650 Saturn Code - PCM Output Controls Fault

What does this mean?

What are the Possible Causes of the DTC P1650 Saturn?

Faulty Powertrain Control Module (PCM)
Powertrain Control Module harness is open or shorted
Powertrain Control Module circuit poor electrical connection

How to Fix the DTC P1650 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 P1650 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 P1650 Saturn Code

1. What are the common symptoms of OBDII code P1650 (Saturn) PCM Output Controls Fault?

The common symptoms include rough engine performance, stalling, poor fuel efficiency, and an illuminated Check Engine Light.

2. What are the possible causes of OBDII code P1650 (Saturn) PCM Output Controls Fault?

Possible causes include damaged wiring, corroded connectors, faulty PCM, malfunctioning sensors, or issues with the ignition system.

3. How can I diagnose OBDII code P1650 (Saturn) PCM Output Controls Fault?

Diagnosis involves using a scan tool to retrieve the fault code, inspecting the wiring and connectors for damage, testing the sensors and actuators related to the PCM output controls, and checking the PCM itself for any faults.

4. Can I drive my vehicle with OBDII code P1650 (Saturn) PCM Output Controls Fault?

It is not recommended to drive your vehicle with this fault code present, as it can lead to further damage and potentially unsafe driving conditions.

5. How do I repair OBDII code P1650 (Saturn) PCM Output Controls Fault?

Repair involves fixing any damaged wiring or connectors, replacing faulty sensors or actuators, addressing issues with the ignition system, and, if necessary, replacing the PCM.

6. Are there any DIY tips for troubleshooting OBDII code P1650 (Saturn) PCM Output Controls Fault?

You can start by checking the wiring and connectors for visible damage, ensuring all connections are secure, and testing related sensors and actuators for proper functioning.

7. Will resetting the fault code resolve OBDII code P1650 (Saturn) PCM Output Controls Fault?

Resetting the fault code may temporarily clear the Check Engine Light, but it will not fix the underlying issue causing the fault code to trigger.

8. How much does it typically cost to repair OBDII code P1650 (Saturn) PCM Output Controls Fault?

The cost of repair can vary depending on the specific cause of the fault, but it may range from a few hundred to over a thousand dollars, including parts and labor.

9. Can a faulty PCM cause OBDII code P1650 (Saturn) PCM Output Controls Fault?

Yes, a faulty PCM (Powertrain Control Module) can be a potential cause of this fault code, and if diagnosed as the issue, it may need to be replaced or reprogrammed.

10. Is it necessary to visit a mechanic for OBDII code P1650 (Saturn) PCM Output Controls Fault repair?

While some DIY troubleshooting is possible, resolving this fault code often requires advanced diagnostic equipment and expertise, so seeking help from a qualified mechanic is recommended.