AutoCodes – GMC – P16EA GMC

P16EA GMC Code - Control Module Serial Peripheral Interface Bus 3

Quick Answer

This diagnostic applies to internal microprocessor integrity conditions within the device. Common causes include Low battery voltage, Reprogram Powertrain Control Module (PCM), Faulty Powertrain Control Module. 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: P16EA GMC indicates Control Module Serial Peripheral Interface Bus 3.
Common causes: Common causes include Low battery voltage, Reprogram Powertrain Control Module (PCM), Faulty Powertrain Control Module.
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 1,117

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 26, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P16EA GMC Description

This diagnostic applies to internal microprocessor integrity conditions within the device. This diagnostic also addresses if the device is not programmed. The device monitors its ability to read and write to the memory. It also monitors a timing function. No external circuits are involved. The Diagnostic Trouble Code (DTC) will be set when the device detects an internal malfunction or incomplete programming.

OBDII Code P16EA GMC - Control Module Serial Peripheral Interface Bus 3 - AutoCodes.com — P16EA GMC Code - Control Module Serial Peripheral Interface Bus 3

What does this mean?

What are the Possible Causes of the DTC P16EA GMC?

Low battery voltage
Reprogram Powertrain Control Module (PCM)
Faulty Powertrain Control Module
Powertrain Control Module harness is open or shorted
Powertrain Control Module circuit poor electrical connection

How to Fix the DTC P16EA 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 P16EA 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.

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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 P16EA GMC Code

1. What are the common symptoms of OBDII code P16EA GMC?

The common symptoms associated with code P16EA GMC include rough idle, engine stalling, poor acceleration, and illuminated check engine light.

2. What does OBDII code P16EA GMC indicate?

Code P16EA indicates an issue with the Control Module Serial Peripheral Interface Bus 3 in a GMC vehicle.

3. What are the possible causes of OBDII code P16EA in a GMC?

Possible causes of code P16EA in a GMC include a faulty control module, damaged wiring or connectors, software issues, or a communication breakdown within the bus system.

4. How can I diagnose the cause of OBDII code P16EA in my GMC vehicle?

Diagnosing code P16EA typically involves using a professional OBDII scanner to retrieve the specific trouble codes, inspecting the wiring and connectors for damage, and performing a thorough check of the control module's functionality.

5. Can I continue driving my GMC with OBDII code P16EA present?

It is not recommended to ignore OBDII code P16EA and continue driving your GMC, as the underlying issue could potentially lead to more severe problems if left unresolved.

6. Is it possible to repair OBDII code P16EA in a GMC on my own?

While some DIY enthusiasts may attempt to address code P16EA themselves by checking connections and wiring, diagnosing and repairing this issue often requires specialized tools and expertise best handled by a professional mechanic or dealership.

7. How much does it typically cost to repair OBDII code P16EA in a GMC?

The cost to repair OBDII code P16EA in a GMC can vary depending on the exact cause of the issue, parts needed for replacement, and labor costs. It is advisable to get a diagnosis and repair estimate from a trusted automotive professional.

8. Can a software update fix OBDII code P16EA in a GMC?

In some cases, a software update provided by the manufacturer may address communication issues causing code P16EA. Consult with a GMC dealership or authorized service center to inquire about available updates.

9. How urgent is it to address OBDII code P16EA in a GMC?

While your vehicle may still be operable with code P16EA present, it is recommended to address the issue promptly to prevent potential damage to the control module or other critical components.

10. Will resetting the OBDII system clear code P16EA in a GMC?

Resetting the OBDII system may temporarily clear the code, but it is likely to reappear if the underlying issue causing code P16EA is not properly diagnosed and repaired.