AutoCodes – Generic – P16E9

P16E9 Code - Control Module Serial Peripheral Interface Bus 2

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: P16E9 indicates Control Module Serial Peripheral Interface Bus 2.
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 6,328

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 P16E9 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 P16E9 - Control Module Serial Peripheral Interface Bus 2 - AutoCodes.com — P16E9 Code - Control Module Serial Peripheral Interface Bus 2

What does this mean?

What are the Possible Causes of the DTC P16E9?

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 P16E9?

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 P16E9 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 P16E9 code?

Need more information on how to fix the P16E9 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P16E9 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P16E9 BMW — Internal Control Module Volt Supply Voltage 3 Performance
P16E9 Buick — Control Module Serial Peripheral Interface Bus 2
P16E9 Cadillac — Control Module Serial Peripheral Interface Bus 2
P16E9 Chevrolet — Control Module Serial Peripheral Interface Bus 2
P16E9 GMC — Control Module Serial Peripheral Interface Bus 2
P16E9 MINI — Internal Control Module Volt Supply Voltage 3 Performance

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 P16E9 Code

1. What are the common symptoms of OBDII code P16E9?

- Common symptoms include the Check Engine Light coming on, poor vehicle performance, and potential issues with the transmission.

2. What can cause the OBDII code P16E9 to trigger?

- The code P16E9 is often triggered by a malfunction in the control module serial peripheral interface bus 2 communication circuit.

3. How can I diagnose the cause of OBDII code P16E9?

- Diagnosing this code typically involves checking the wiring and connections related to the control module serial peripheral interface bus 2, as well as inspecting the control module itself for any issues.

4. What are some repair tips for fixing OBDII code P16E9?

- Repair tips may include checking for loose or damaged wiring, ensuring proper connections, and potentially replacing the control module if necessary.

5. Can OBDII code P16E9 be cleared/reset without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it is recommended to address the underlying issue to prevent further problems and potential damage to the vehicle.

6. Is it safe to continue driving with OBDII code P16E9 present?

- It is generally not recommended to drive with the code unresolved, as it can lead to performance issues and potentially cause further damage to the vehicle.

7. Can a DIY enthusiast fix OBDII code P16E9 at home?

- Depending on your experience and tools available, you may be able to address the code at home by inspecting the wiring and connections carefully.

8. How much does it typically cost to repair OBDII code P16E9 at a mechanic or dealership?

- Repair costs can vary widely depending on the exact cause of the code, but it's advisable to get a diagnostic assessment from a professional to determine the cost.

9. Are there any precautions to take when working on OBDII code P16E9?

- It's important to disconnect the battery before working on any electrical components and to handle wiring and control modules with care to avoid further damage.

10. Can extreme weather conditions affect the likelihood of OBDII code P16E9 occurring?

- Extreme weather conditions can potentially impact the electrical components of the vehicle, which may increase the chances of triggering the code P16E9. Regular maintenance and inspections can help mitigate these risks.