AutoCodes – Cadillac – P1008 Cadillac

P1008 Cadillac Code - Engine Coolant Bypass Valve Command Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Coolant Bypass Valve, Engine Coolant Bypass Valve harness is open or shorted, Engine Coolant Bypass Valve 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
P1008 Cadillac indicates Engine Coolant Bypass Valve Command Signal Message Counter Incorrect.
Common causes
Common causes include Faulty Engine Coolant Bypass Valve, Engine Coolant Bypass Valve harness is open or shorted, Engine Coolant Bypass Valve 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 616
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 18, 2022
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Code P1008 Cadillac Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Engine Coolant Bypass Valve Command Signal Message Counter is Incorrect.
OBDII Code P1008 Cadillac - Engine Coolant Bypass Valve Command Signal Message Counter Incorrect - AutoCodes.com
P1008 Cadillac Code - Engine Coolant Bypass Valve Command Signal Message Counter Incorrect

What are the Possible Causes of the DTC P1008 Cadillac?

  • Faulty Engine Coolant Bypass Valve
  • Engine Coolant Bypass Valve harness is open or shorted
  • Engine Coolant Bypass Valve circuit poor electrical connection

How to Fix the DTC P1008 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 P1008 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 P1008 Cadillac code?

Need more information on how to fix the P1008 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1008 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 P1008 Cadillac Code

1. What are the common symptoms of OBDII code P1008 in a Cadillac related to the Engine Coolant Bypass Valve Command Signal Message Counter Incorrect?

- Common symptoms include poor engine performance, rough idling, and potential overheating issues.

2. What causes the OBDII code P1008 in a Cadillac?

- This code is typically triggered by a malfunction in the engine coolant bypass valve or an issue with the command signal message counter.

3. How can I diagnose the Engine Coolant Bypass Valve Command Signal in a Cadillac?

- Diagnosing this issue may require using a diagnostic scanner to read the OBDII code, along with checking the bypass valve, wiring, and connectors for any signs of damage or malfunction.

4. Can a faulty engine coolant bypass valve be repaired, or does it need to be replaced?

- In some cases, the bypass valve may be repairable by cleaning or adjusting it. However, if the valve is severely damaged or malfunctioning, it is recommended to replace it.

5. Are there any specific repair tips for addressing the P1008 code in a Cadillac?

- It is important to inspect the wiring harness and connectors associated with the bypass valve for any damage or corrosion, as this can also contribute to the code being triggered.

6. Will driving with the OBDII code P1008 in a Cadillac cause further damage to the vehicle?

- Continuing to drive with this code may lead to potential engine overheating or other related issues, so it is advisable to address the problem promptly.

7. How much does it typically cost to repair the Engine Coolant Bypass Valve Command Signal issue in a Cadillac?

- The cost of repairs can vary depending on the extent of the issue, but it is recommended to consult with a professional mechanic for an accurate diagnosis and cost estimate.

8. Can resetting the OBDII code P1008 in a Cadillac temporarily resolve the issue?

- Resetting the code may temporarily turn off the check engine light, but if the underlying problem with the bypass valve or signal counter is not addressed, the code is likely to reappear.

9. Is it safe to continue driving my Cadillac if the P1008 code is intermittent?

- While intermittent codes may not always indicate a severe issue, it is still recommended to have the problem diagnosed and repaired to prevent any potential long-term damage to the vehicle.

10. How can I prevent the OBDII code P1008 related to the Engine Coolant Bypass Valve Command Signal in my Cadillac in the future?

- Regular maintenance checks, including inspecting the coolant system and related components, can help prevent issues that may trigger this code.

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