AutoCodes – Chevrolet – P263B 2016 Chevrolet Silverado

P263B 2016 Chevrolet Silverado Code - Malfunction Indicator Lamp Control Circuit High Voltage

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 Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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: P263B 2016 Chevrolet Silverado indicates Malfunction Indicator Lamp Control Circuit High Voltage.
Common causes: Common causes include Faulty Instrument Cluster, Instrument Cluster harness is open or shorted, Instrument Cluster 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 502

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P263B 2016 Chevrolet Silverado 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 high voltage on the MIL control circuit during the driver ON state. This indicates a shorted to voltage MIL control circuit.

OBDII Code P263B 2016 Chevrolet Silverado - Malfunction Indicator Lamp Control Circuit High Voltage - AutoCodes.com — P263B 2016 Chevrolet Silverado Code - Malfunction Indicator Lamp Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P263B 2016 Chevrolet Silverado?

Faulty Instrument Cluster
Instrument Cluster harness is open or shorted
Instrument Cluster circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P263B 2016 Chevrolet Silverado?

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

If the condition is intermittent, move the related harnesses and connectors while monitoring the scan tool MIL control circuit status parameters. Perform this test with the ignition ON and the engine OFF, and with the engine running. The MIL control circuit status parameters change from OK or Not Run to Malfunction if there is a condition with a circuit or a connection.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P263B 2016 Chevrolet Silverado 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 P263B 2016 Chevrolet Silverado code?

Need more information on how to fix the P263B 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P263B 2016 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P263B in a 2016 Chevrolet Silverado?

The common symptoms include the illumination of the Malfunction Indicator Lamp (MIL) or Check Engine Light on the dashboard.

2. What is the main cause of the P263B code in a 2016 Chevrolet Silverado?

The P263B code typically indicates a malfunction in the Malfunction Indicator Lamp (MIL) control circuit, specifically high voltage being detected.

3. How serious is the P263B OBDII code in a 2016 Chevrolet Silverado?

While the vehicle may still be driveable with this code, it is important to address the issue promptly to prevent potential long-term damage to the engine or emission control system.

4. Can a loose gas cap trigger the P263B code in a 2016 Chevrolet Silverado?

While a loose gas cap is unlikely to directly cause the P263B code, it is always a good idea to ensure the gas cap is securely tightened as it can lead to other emission-related issues.

5. How can I diagnose and repair the P263B code in a 2016 Chevrolet Silverado?

Diagnosing and repairing the P263B code usually involves checking the wiring and connectors in the Malfunction Indicator Lamp (MIL) control circuit for any damage or loose connections. Repair or replace components as needed.

6. Is it safe to continue driving a 2016 Chevrolet Silverado with the P263B code?

It is generally safe to drive the vehicle with the P263B code, but it is recommended to have the issue diagnosed and repaired at your earliest convenience to prevent potential complications.

7. Can a faulty sensor trigger the P263B code in a 2016 Chevrolet Silverado?

While a faulty sensor is less common as a cause of the P263B code, it is still a possibility. It is advisable to have a professional diagnose the issue to pinpoint the exact cause.

8. How much does it typically cost to repair the P263B OBDII code in a 2016 Chevrolet Silverado?

The cost of repairing the P263B code can vary depending on the exact cause of the issue and the labor rates in your area. It is recommended to obtain a few quotes from reputable mechanics.

9. Will resetting the OBDII system clear the P263B code in a 2016 Chevrolet Silverado?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not fixed, the code is likely to return. It is best to diagnose and repair the root cause of the problem.

10. How long does it typically take to repair the P263B code in a 2016 Chevrolet Silverado?

The repair time for the P263B code can vary depending on the exact cause and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the issue.