AutoCodes – Cadillac – P216C Cadillac

P216C Cadillac Code - Cylinder 5 Injector High Control Circuit High Voltage

Quick Answer

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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
P216C Cadillac indicates Cylinder 5 Injector High Control Circuit High Voltage.
Common causes
Common causes include Faulty Fuel Injector 5, Fuel Injector 5 harness is open or shorted, Fuel Injector 5 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 798
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 23, 2024
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Code P216C Cadillac Description

The Engine Control Module (ECM) supplies voltage to each fuel injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector high voltage supply circuit is shorted to voltage for greater than 2 s.
OBDII Code P216C Cadillac - Cylinder 5 Injector High Control Circuit High Voltage - AutoCodes.com
P216C Cadillac Code - Cylinder 5 Injector High Control Circuit High Voltage

What are the Possible Causes of the DTC P216C Cadillac?

  • Faulty Fuel Injector 5
  • Fuel Injector 5 harness is open or shorted
  • Fuel Injector 5 circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P216C Cadillac?

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 P216C Cadillac 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 P216C Cadillac code?

Need more information on how to fix the P216C Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P216C Cadillac code diagnosed by a professional: Find a repair shop in your area

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 P216C Cadillac Code

1. What are the common symptoms of OBDII code P216C on a Cadillac related to Cylinder 5 Injector High Control Circuit High Voltage?

- Common symptoms include rough idling, engine misfires, decreased fuel efficiency, and potentially a noticeable decrease in overall engine performance.

2. What are the possible causes of OBDII code P216C on a Cadillac indicating a high voltage issue with the Cylinder 5 injector control circuit?

- Possible causes may include a faulty fuel injector, wiring issues in the injector control circuit, a problem with the Engine Control Module (ECM), or a high voltage electrical issue.

3. How can I diagnose the cause of OBDII code P216C on my Cadillac related to Cylinder 5 Injector High Control Circuit High Voltage?

- Diagnose the issue by conducting a thorough inspection of the injector, checking the wiring and connectors for any damage, testing the voltage in the control circuit, and using a scan tool to retrieve specific trouble codes.

4. Is it safe to drive my Cadillac with OBDII code P216C and a high voltage issue in the Cylinder 5 injector control circuit?

- It is not recommended to drive the vehicle with this code present as it can lead to further damage to the engine components and potentially pose a safety risk. Immediate repair is advised.

5. Can I reset the OBDII code P216C on my Cadillac myself, or do I need to take it to a professional mechanic?

- While you can reset the code using an OBDII scanner, it is crucial to address the underlying issue causing the fault code. Consulting a professional mechanic for proper diagnosis and repair is highly recommended.

6. What are some repair tips for fixing OBDII code P216C on a Cadillac with a Cylinder 5 Injector High Control Circuit High Voltage fault?

- Repair tips include checking and potentially replacing the faulty fuel injector, repairing any damaged wiring or connectors, clearing the code after repairs, and conducting a thorough test drive to ensure the issue is resolved.

7. How much can I expect to pay for repairing OBDII code P216C on my Cadillac due to a high voltage issue in the Cylinder 5 injector control circuit?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement, labor, diagnostic fees, and any additional repairs needed to address related problems.

8. Are there any preventive maintenance measures I can take to avoid encountering OBDII code P216C on my Cadillac in the future?

- Regularly servicing your vehicle, including fuel system maintenance, checking for wiring issues, and addressing any warning signs promptly, can help prevent issues like OBDII code P216C from occurring.

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