AutoCodes – Cadillac – P135F Cadillac

P135F Cadillac Code - Cooling Fan 4 Status Signals Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Cooling Fan 4, Cooling Fan 4 harness is open or shorted, Cooling Fan 4 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: P135F Cadillac indicates Cooling Fan 4 Status Signals Message Counter Incorrect.
Common causes: Common causes include Faulty Cooling Fan 4, Cooling Fan 4 harness is open or shorted, Cooling Fan 4 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 329

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 Sep 27, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P135F 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 Cooling Fan 4 Status Signals Message Counter is Incorrect.

OBDII Code P135F Cadillac - Cooling Fan 4 Status Signals Message Counter Incorrect - AutoCodes.com — P135F Cadillac Code - Cooling Fan 4 Status Signals Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P135F Cadillac?

Faulty Cooling Fan 4
Cooling Fan 4 harness is open or shorted
Cooling Fan 4 circuit poor electrical connection

How to Fix the DTC P135F 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 P135F 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.

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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 P135F Cadillac Code

1. What are the common symptoms of OBDII code P135F in a Cadillac related to Cooling Fan 4 Status Signals Message Counter Incorrect?

- Common symptoms include the cooling fan not operating properly, engine overheating, and the vehicle possibly going into a reduced power mode.

2. What are the possible causes of OBDII code P135F in a Cadillac?

- The possible causes of this code include a faulty cooling fan, a malfunctioning cooling fan relay, wiring issues, or a problem with the engine control module (ECM).

3. How can I diagnose the issue causing OBDII code P135F in my Cadillac?

- You can diagnose the issue by checking the cooling fan operation, inspecting the wiring and connections related to the cooling fan, testing the cooling fan relay, and scanning the ECM for any related fault codes.

4. What are some repair tips for fixing OBDII code P135F in a Cadillac?

- Repair tips include checking and repairing any damaged wiring, replacing a faulty cooling fan or relay, ensuring proper connections, and resetting the ECM after repairs are made.

5. Can I drive my Cadillac with OBDII code P135F present?

- It is not recommended to drive your Cadillac with this code present, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

6. Will resetting the ECM clear OBDII code P135F in a Cadillac?

- Resetting the ECM may temporarily clear the code, but if the underlying issue causing the code is not fixed, it is likely to return. It is important to diagnose and repair the root cause of the problem.

7. How much does it typically cost to repair OBDII code P135F in a Cadillac?

- The cost of repair can vary depending on the specific issue causing the code and the labor rates in your area. It is advisable to get a diagnostic done to determine the exact repair needed.

8. Can a DIY enthusiast fix OBDII code P135F in a Cadillac?

- Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the issue causing this code. However, it is recommended to have the proper knowledge and experience when working on automotive electrical systems.

9. Is OBDII code P135F a common issue in Cadillac vehicles?

- While not extremely common, issues related to cooling fan malfunctions leading to this code can occur in Cadillac vehicles, especially in older models or vehicles with high mileage.

10. How urgent is it to address OBDII code P135F in a Cadillac?

- It is important to address this code promptly to avoid potential engine overheating and damage. Ignoring the issue can lead to more costly repairs in the future.