AutoCodes – Saturn – B0938 Saturn

B0938 Saturn Code - Coolant Level Sensor Circuit Low

Quick Answer

The Powertrain Control Module (PCM) monitors the Coolant Level Sensor. Common causes include Low Coolant Level, Faulty Coolant Level Sensor, Coolant Level Sensor harness is open or shorted. 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: B0938 Saturn indicates Coolant Level Sensor Circuit Low.
Common causes: Common causes include Low Coolant Level, Faulty Coolant Level Sensor, Coolant Level Sensor harness is open or shorted.
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 728

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 Mar 11, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0938 Saturn Description

The Powertrain Control Module (PCM) monitors the Coolant Level Sensor. The PCM sets the OBDII code when the Coolant Level Sensor is not to factory specifications.

OBDII Code B0938 Saturn - Coolant Level Sensor Circuit Low - AutoCodes.com — B0938 Saturn Code - Coolant Level Sensor Circuit Low

What does this mean?

What are the Possible Causes of the DTC B0938 Saturn?

Low Coolant Level
Faulty Coolant Level Sensor
Coolant Level Sensor harness is open or shorted
Coolant Level Sensor circuit poor electrical connection

How to Fix the DTC B0938 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 B0938 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 B0938 Saturn code?

Need more information on how to fix the B0938 Saturn code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0938 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 B0938 Saturn Code

1. What are the common symptoms of OBDII code B0938 Saturn (Coolant Level Sensor Circuit Low)?

- The common symptoms include a dashboard warning light illuminating, inaccurate coolant level readings, and potential overheating issues.

2. What could cause the Coolant Level Sensor Circuit Low code (B0938) in a Saturn vehicle?

- Possible causes can include a faulty coolant level sensor, damaged wiring or connectors, low coolant levels, or a malfunctioning engine control module (ECM).

3. How can I diagnose the Coolant Level Sensor Circuit Low code in my Saturn?

- To diagnose this issue, you can visually inspect the coolant level sensor and its connections, test the sensor's resistance, check coolant levels, and use a diagnostic scanner to read the trouble codes.

4. Can I continue driving my Saturn with the B0938 Coolant Level Sensor Circuit Low code?

- It is not recommended to drive your vehicle with this code present, as inaccurate coolant level readings can lead to overheating and potential engine damage.

5. How can I repair the Coolant Level Sensor Circuit Low issue in my Saturn?

- Repair options may include replacing the faulty coolant level sensor, repairing damaged wiring or connectors, ensuring proper coolant levels, and clearing the trouble codes with a diagnostic scanner.

6. Will resetting the trouble codes make the B0938 code go away permanently?

- Resetting the trouble codes may temporarily clear the code, but if the underlying issue causing the Coolant Level Sensor Circuit Low is not addressed, the code is likely to reappear.

7. Can a DIY enthusiast fix the Coolant Level Sensor Circuit Low code in a Saturn?

- Depending on your skill level and access to tools, DIY enthusiasts may be able to address this issue by following repair guides or consulting with a professional for guidance.

8. Is it necessary to replace the coolant level sensor if it triggers the B0938 code?

- If the coolant level sensor is confirmed to be faulty after testing, it is advisable to replace it to ensure accurate coolant level readings and prevent potential engine overheating.

9. Could a low coolant level be the sole reason for the B0938 code in a Saturn?

- While low coolant levels can trigger this code, it is essential to also check the sensor, wiring, and connectors for any faults before solely attributing the issue to low coolant.

10. How can I prevent the Coolant Level Sensor Circuit Low code from reoccurring in my Saturn?

- Regularly checking and maintaining proper coolant levels, ensuring the integrity of the sensor and its connections, and addressing any cooling system issues promptly can help prevent the recurrence of this trouble code.