AutoCodes – GMC – P06D2 GMC

P06D2 GMC Code - 5V Reference 5 Circuit

Quick Answer

The Engine Control Module (ECM) has four (5) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt 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
P06D2 GMC indicates 5V Reference 5 Circuit.
Common causes
Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt 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 635
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 23, 2022
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Code P06D2 GMC Description

The Engine Control Module (ECM) has four (5) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Each internal reference circuit provides external 5 Volt reference circuits for more than one sensor. A short to ground or short to voltage on one external 5 Volt reference circuit can affect all the components connected to the same internal 5 Volt reference circuit. The Diagnostic Trouble Code (DTC) will be set when the ECM detects a short to voltage or ground on any of the 5 Volt reference circuits for greater than 0.5 s.
OBDII Code P06D2 GMC - 5V Reference 5 Circuit - AutoCodes.com
P06D2 GMC Code - 5V Reference 5 Circuit

What are the Possible Causes of the DTC P06D2 GMC?

  • Faulty Sensor on 5 Volt circuit
  • Sensor on 5 Volt circuit harness is open or shorted
  • Sensor on 5 Volt circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P06D2 GMC?

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 P06D2 GMC 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 P06D2 GMC code?

Need more information on how to fix the P06D2 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific GMC Models

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 P06D2 GMC Code

What does the OBDII code P06D2 mean for GMC vehicles?

1. The code P06D2 indicates a problem with the 5V Reference 5 Circuit, which provides a stable 5-volt supply to specific sensors in the vehicle's system. 2.

What are the common symptoms of the P06D2 code on a GMC?

Symptoms may include the check engine light turning on, poor engine performance, erratic sensor readings, or difficulty starting the vehicle. 3.

What causes the P06D2 code to trigger?

Common causes include a shorted or open circuit, a faulty Engine Control Module (ECM), damaged wiring, or a defective sensor connected to the 5V reference circuit. 4.

How is the P06D2 code diagnosed?

A technician will check the wiring and connectors for damage, verify the 5V reference voltage with a multimeter, and inspect related sensors for faults or failures. 5.

Can I drive my GMC with a P06D2 code?

Driving with this code is not recommended, as it can lead to poor engine performance or further damage to the vehicle's electrical system. 6.

How do you fix the P06D2 code on a GMC vehicle?

Repairs may involve fixing or replacing damaged wiring, replacing a faulty sensor, or reprogramming or replacing the ECM if necessary. 7.

Which sensors rely on the 5V Reference 5 Circuit in GMC vehicles?

This circuit typically powers critical sensors like throttle position sensors, manifold absolute pressure sensors, or other engine-related sensors. 8.

Can a bad ground connection cause the P06D2 code?

Yes, a poor ground connection can disrupt the 5V reference circuit and trigger this code. 9.

Will clearing the P06D2 code fix the issue permanently?

Clearing the code without addressing the root cause will only temporarily remove the code, and the problem will likely return. 10.

How much does it cost to repair a P06D2 code on a GMC?

Repair costs vary depending on the cause, ranging from $50 for simple wiring repairs to $500 or more if the ECM needs replacement.

Discuss the causes and fixes for P06D2 GMC OBDII Code

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