AutoCodes – GMC – P250A 2015 GMC Sierra

P250A 2015 GMC Sierra Code - Engine Oil Level Switch Circuit

Quick Answer

The engine oil level sensor/switch is normally closed with a proper engine oil level. Common causes include Faulty Engine Oil Level Switch, Engine Oil Level Switch harness is open or shorted, Engine Oil Level Switch 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: P250A 2015 GMC Sierra indicates Engine Oil Level Switch Circuit.
Common causes: Common causes include Faulty Engine Oil Level Switch, Engine Oil Level Switch harness is open or shorted, Engine Oil Level Switch 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 179

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 Sep 21, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P250A 2015 GMC Sierra Description

The engine oil level sensor/switch is normally closed with a proper engine oil level. The switch opens when the engine oil level drops below a calibrated level. The Engine Control Module (ECM) monitors the engine oil level signal circuit when the ignition is ON, and the engine is OFF. With the switch in the closed position, the ECM detects a low voltage on the signal circuit. With the switch in the open position, the ECM detects a high voltage on the signal circuit. When high voltage is detected on the signal circuit, the ECM will send a serial data message to the Instrument Panel Cluster (IPC). The IPC will then display a message on the Driver Information Center (DIC) or illuminate a low engine oil level lamp.
The Diagnostic Trouble Code (DTC) will be set when the ECM detects a high voltage on the signal circuit for three consecutive ignition cycles, followed by an ignition OFF event from 15 minutes to greater than 50 minutes, depending on engine oil temperatures.

OBDII Code P250A 2015 GMC Sierra - Engine Oil Level Switch Circuit - AutoCodes.com — P250A 2015 GMC Sierra Code - Engine Oil Level Switch Circuit

What does this mean?

What are the Possible Causes of the DTC P250A 2015 GMC Sierra?

Faulty Engine Oil Level Switch
Engine Oil Level Switch harness is open or shorted
Engine Oil Level Switch circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P250A 2015 GMC Sierra?

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 does this mean?

Code Tech Notes

Low Engine Oil Level Message Lamp (With Diesel Engine) or Engine Oil Level Switch (With Gasoline Engine)

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P250A 2015 GMC Sierra 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 P250A 2015 GMC Sierra 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 P250A 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code P250A in a 2015 GMC Sierra related to the engine oil level switch circuit?

The common symptoms include illuminated check engine light, inaccurate oil level readings on the dashboard, and potential issues with oil pressure monitoring.

2. What could cause the OBDII code P250A in a 2015 GMC Sierra?

The code P250A typically indicates a fault in the engine oil level switch circuit, which may be caused by a faulty oil level sensor, wiring issues, or a problem with the engine control module.

3. How can I diagnose the OBDII code P250A in my 2015 GMC Sierra?

Diagnosing the code P250A involves using an OBDII scanner to retrieve the fault code, inspecting the oil level sensor and its wiring for damage or corrosion, and testing the sensor's functionality.

4. Can I continue driving my 2015 GMC Sierra with the OBDII code P250A illuminated?

It is not recommended to drive the vehicle with the check engine light on due to the potential impact on engine performance and safety. It is advisable to address the underlying issue promptly.

5. What are some repair tips for fixing the OBDII code P250A in a 2015 GMC Sierra?

Repair tips may include replacing the faulty oil level sensor, repairing damaged wiring, checking and resetting the engine control module, and clearing the fault code using an OBDII scanner.

6. How much does it typically cost to repair the OBDII code P250A in a 2015 GMC Sierra at a mechanic or dealership?

The cost of repairing the code P250A can vary depending on the extent of the issue, parts needed, and labor costs. It is advisable to get estimates from different service providers.

7. Can a DIY enthusiast fix the OBDII code P250A in a 2015 GMC Sierra?

While some may attempt to fix the issue themselves, diagnosing and repairing the engine oil level switch circuit can be complex. It is recommended to have a professional mechanic handle the repair.

8. Are there any recalls or service bulletins related to the OBDII code P250A in a 2015 GMC Sierra?

It's advisable to check with a GMC dealership or visit the NHTSA website to see if there are any recalls or service bulletins related to the specific OBDII code P250A for the 2015 GMC Sierra.

9. How often should the engine oil level switch circuit be inspected in a 2015 GMC Sierra to prevent OBDII code P250A from occurring?

Regular maintenance schedules recommend inspecting the engine oil level switch circuit during routine oil changes or service intervals to prevent issues that may trigger the OBDII code P250A.

10. Can the OBDII code P250A in a 2015 GMC Sierra affect the vehicle's overall performance or fuel efficiency?

While the code P250A directly relates to the engine oil level switch circuit, unresolved issues could potentially impact engine performance and fuel efficiency over time. It's crucial to address the problem promptly.