AutoCodes – Saturn – P0690 Saturn

P0690 Saturn Code - Electronic Control Module Power Relay Sense Circuit High

Quick Answer

The powertrain relay is a normally open relay. Common causes include Weak battery, Low voltage while cranking, Faulty Engine Control Module (ECM) power relay. 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: P0690 Saturn indicates Electronic Control Module Power Relay Sense Circuit High.
Common causes: Common causes include Weak battery, Low voltage while cranking, Faulty Engine Control Module (ECM) power relay.
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 2,833

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 Jul 18, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0690 Saturn Description

The powertrain relay is a normally open relay. The relay armature is held in the open position by spring tension. Battery positive voltage is supplied directly to the relay coil and the armature contact at all times. The Engine Control Module (ECM) supplies the ground path to the relay coil control circuit via an internal integrated circuit called an Output Driver Module (ODM). The ODM output control is configured to operate as a low side driver for the powertrain relay. The ODM for the powertrain relay also incorporates a fault detection circuit, which is continuously monitored by the ECM. When the ECM commands the powertrain relay ON, ignition 1 voltage is supplied to the ECM, and to several additional circuits.

OBDII Code P0690 Saturn - Electronic Control Module Power Relay Sense Circuit High - AutoCodes.com — P0690 Saturn Code - Electronic Control Module Power Relay Sense Circuit High

What does this mean?

What are the Possible Causes of the DTC P0690 Saturn?

Weak battery
Low voltage while cranking
Faulty Engine Control Module (ECM) power relay
ECM power relay harness is open or shorted
ECM power relay circuit poor electrical connection
Blown ECM fuse
Faulty ECM

How to Fix the DTC P0690 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 P0690 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 P0690 Saturn code?

Need more information on how to fix the P0690 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0690 Saturn code diagnosed by a professional: Find a repair shop in your area

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 P0690 Saturn Code

1. What are the common symptoms of OBDII code P0690 in a Saturn?

- Common symptoms include the check engine light coming on, engine stalling or not starting, and poor vehicle performance.

2. What does the OBDII code P0690 indicate in a Saturn?

- OBDII code P0690 indicates a malfunction in the Electronic Control Module (ECM) power relay sense circuit, specifically a high voltage condition.

3. What are the possible causes of OBDII code P0690 in a Saturn?

- Possible causes include a faulty ECM power relay, wiring issues in the relay sense circuit, a corroded or damaged connector, or a malfunctioning ECM.

4. How can I diagnose the OBDII code P0690 in my Saturn?

- Diagnosis involves using a scan tool to read the code, checking the ECM power relay and related wiring for faults, and testing the power relay sense circuit for high voltage.

5. Can I drive my Saturn with OBDII code P0690?

- It is not recommended to drive your Saturn with OBDII code P0690, as it can lead to engine performance issues or potential stalling, increasing the risk of a breakdown.

6. What are the repair options for OBDII code P0690 in a Saturn?

- Repair options include replacing the faulty ECM power relay, repairing any wiring or connector issues, or replacing the ECM if necessary.

7. How much does it cost to repair OBDII code P0690 in a Saturn?

- The cost of repair can vary depending on the specific cause of the code, but it may range from $100 to $500, including parts and labor.

8. Can I reset the OBDII code P0690 in my Saturn without fixing the underlying issue?

- While you can reset the code using a scan tool, it is not recommended as the underlying issue causing the code will still be present and may lead to further problems.

9. How can I prevent OBDII code P0690 from recurring in my Saturn?

- Regular maintenance and inspection of the ECM power relay and related components can help prevent OBDII code P0690 from recurring in your Saturn.

10. Is OBDII code P0690 a common issue in Saturn vehicles?

- While not extremely common, OBDII code P0690 can occur in Saturn vehicles, especially in older models with electrical system issues.

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