AutoCodesSaturn – P0650 Saturn

P0650 Saturn Code - Malfunction Indicator Lamp Control Circuit

Quick Answer

The Malfunction Indicator Lamp (MIL) illuminates to inform the driver that an emission system fault has occurred, and the powertrain control system requires service. Common causes include Faulty Malfunction Indicator Lamp Bulb, Malfunction Indicator Lamp Bulb harness is open or shorted, Malfunction Indicator Lamp Bulb 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
P0650 Saturn indicates Malfunction Indicator Lamp Control Circuit.
Common causes
Common causes include Faulty Malfunction Indicator Lamp Bulb, Malfunction Indicator Lamp Bulb harness is open or shorted, Malfunction Indicator Lamp Bulb 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 8,917
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 18, 2022
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Code P0650 Saturn Description

The Malfunction Indicator Lamp (MIL) illuminates to inform the driver that an emission system fault has occurred, and the powertrain control system requires service. Ignition voltage is supplied directly to the MIL. The Engine Control Module (ECM) turns the MIL ON by grounding the MIL control circuit when the emission system fault occurs. Under normal operating conditions, the MIL should be ON only when the ignition is ON, and the engine is OFF. The Diagnostic Trouble Code (DTC) will be set when the ECM detects low voltage during the MIL control circuit driver OFF state. This indicates either a shorted to ground or an open MIL control circuit.
OBDII Code P0650 Saturn - Malfunction Indicator Lamp Control Circuit - AutoCodes.com
P0650 Saturn Code - Malfunction Indicator Lamp Control Circuit

What are the Possible Causes of the DTC P0650 Saturn?

  • Faulty Malfunction Indicator Lamp Bulb
  • Malfunction Indicator Lamp Bulb harness is open or shorted
  • Malfunction Indicator Lamp Bulb circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0650 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 P0650 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.

Need more information about the P0650 Saturn code?

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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 P0650 Saturn Code

1. What does the OBDII code P0650 mean on a Saturn?

P0650 indicates a malfunction in the Malfunction Indicator Lamp (MIL) Control Circuit, which controls the check engine light on the dashboard.

2. What are the common symptoms of a P0650 code on a Saturn?

The most common symptom is the check engine light not illuminating when it should or staying on constantly. There may also be no other noticeable performance issues.

3. What causes the P0650 code to trigger on a Saturn?

Common causes include a faulty bulb in the instrument cluster, damaged wiring or connectors in the MIL circuit, a defective powertrain control module (PCM), or a blown fuse.

4. Can a faulty PCM cause the P0650 code on a Saturn?

Yes, if the PCM fails to send the correct signal to the MIL, it can trigger the P0650 code.

5. How can I diagnose the P0650 code on my Saturn?

Start by checking the MIL bulb, fuses, and wiring for damage. Next, use a multimeter to test the circuit for proper voltage. If no issues are found, the PCM may need further testing.

6. Can I drive my Saturn with a P0650 code?

Yes, but driving with this code means the check engine light may not function properly to alert you of other issues, potentially leading to more severe problems.

7. What repairs can fix the P0650 code on a Saturn?

Repairs may include replacing the MIL bulb, repairing damaged wiring, replacing a blown fuse, or, in rare cases, replacing the PCM.

8. Does a blown fuse often cause the P0650 code on a Saturn?

Yes, a blown fuse in the MIL circuit is a common cause and should be one of the first things checked.

9. Can a P0650 code be cleared without repairs on a Saturn?

While the code can be cleared with an OBDII scanner, it will likely return if the underlying issue isn’t resolved.

10. Will repairing the MIL control circuit fix the P0650 code on a Saturn?

Yes, addressing the specific malfunction in the MIL control circuit will usually resolve the P0650 code.

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