AutoCodes – Chevrolet – P263A Chevrolet

P263A Chevrolet Code - Malfunction Indicator Lamp Control Circuit Low 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 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: P263A Chevrolet indicates Malfunction Indicator Lamp Control Circuit Low Voltage.
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 4,891

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 P263A Chevrolet 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 P263A Chevrolet - Malfunction Indicator Lamp Control Circuit Low Voltage - AutoCodes.com — P263A Chevrolet Code - Malfunction Indicator Lamp Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P263A Chevrolet?

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 P263A Chevrolet?

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 P263A Chevrolet 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.

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Information for Specific Chevrolet Models

P263A 2014 Chevrolet Silverado — Malfunction Indicator Lamp Control Circuit Low Voltage
P263A 2015 Chevrolet Silverado — Malfunction Indicator Lamp Control Circuit Low Voltage
P263A 2016 Chevrolet Silverado — Malfunction Indicator Lamp Control Circuit Low Voltage
P263A 2017 Chevrolet Silverado — Malfunction Indicator Lamp Control Circuit Low Voltage
P263A 2018 Chevrolet Silverado — Malfunction Indicator Lamp Control Circuit Low Voltage

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 P263A Chevrolet Code

1. What are the common symptoms of OBDII code P263A in a Chevrolet?

The common symptoms of OBDII code P263A in a Chevrolet include the Malfunction Indicator Lamp (MIL) or Check Engine Light illuminating on the dashboard.

2. What does the OBDII code P263A indicate in a Chevrolet?

OBDII code P263A in a Chevrolet indicates a malfunction in the Malfunction Indicator Lamp (MIL) control circuit, specifically low voltage.

3. What are the possible causes of OBDII code P263A in a Chevrolet?

Possible causes of OBDII code P263A in a Chevrolet include a faulty Malfunction Indicator Lamp (MIL), damaged wiring or connectors in the control circuit, or a problem with the powertrain control module (PCM).

4. How can I diagnose OBDII code P263A in my Chevrolet?

Diagnosing OBDII code P263A in a Chevrolet involves using an OBDII scanner to retrieve the code, checking the wiring and connectors in the MIL control circuit, and testing the functionality of the PCM.

5. How serious is OBDII code P263A in a Chevrolet?

OBDII code P263A in a Chevrolet is not a critical issue but should be addressed promptly to prevent potential problems with the vehicle's emission control system.

6. Can I still drive my Chevrolet with OBDII code P263A?

It is generally safe to drive your Chevrolet with OBDII code P263A, but it is recommended to have the issue diagnosed and repaired as soon as possible to avoid potential problems.

7. How can I repair OBDII code P263A in my Chevrolet?

Repairing OBDII code P263A in a Chevrolet may involve replacing the Malfunction Indicator Lamp (MIL), repairing or replacing damaged wiring or connectors, or reprogramming the PCM.

8. Will OBDII code P263A cause my Chevrolet to fail an emissions test?

OBDII code P263A may cause your Chevrolet to fail an emissions test, as a malfunction in the MIL control circuit can affect the vehicle's emission control system.

9. Can I reset OBDII code P263A in my Chevrolet with a simple DIY method?

Resetting OBDII code P263A in a Chevrolet may require more than a simple DIY method, as it involves diagnosing the underlying issue and potentially repairing or replacing components in the MIL control circuit.

10. How much does it cost to repair OBDII code P263A in a Chevrolet?

The cost to repair OBDII code P263A in a Chevrolet can vary depending on the underlying cause of the issue, the extent of the repairs needed, and labor costs at your chosen repair facility.