AutoCodes – Chrysler – P0888 Chrysler

P0888 Chrysler Code - Transmission Relay Always Off

Quick Answer

The transmission control relay is used to supply power to the solenoid pack when the transmission is in normal operating mode. Common causes include Faulty Transmission Control Relay, Transmission Control Relay harness is open or shorted, Transmission Control Relay 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
P0888 Chrysler indicates Transmission Relay Always Off.
Common causes
Common causes include Faulty Transmission Control Relay, Transmission Control Relay harness is open or shorted, Transmission Control Relay 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 33,156
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 11, 2019
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Code P0888 Chrysler Description

The transmission control relay is used to supply power to the solenoid pack when the transmission is in normal operating mode. When the relay is off, no power is supplied to the solenoid pack and the transmission is in Limp-in mode. The relay output is fed back to the Powertrain Control Module (PCM). It is referred to as the Transmission Control Relay Output circuit or switched battery.
After a controller reset (ignition key turned to the run position or after cranking engine), the controller energizes the relay. Prior to this the PCM verifies that the contacts are open by checking for no voltage at the switched battery terminals. After the relay is energized, the PCM monitors the terminals to verify that the voltage is greater than 3 volts.
OBDII Code P0888 Chrysler - Transmission Relay Always Off - AutoCodes.com
P0888 Chrysler Code - Transmission Relay Always Off

What are the Possible Causes of the DTC P0888 Chrysler?

  • Faulty Transmission Control Relay
  • Transmission Control Relay harness is open or shorted
  • Transmission Control Relay circuit poor electrical connection
  • Faulty Transmission Solenoid/Pressure Switch Assembly

How to Fix the DTC P0888 Chrysler?

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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0888 Chrysler 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 P0888 Chrysler code?

Need more information on how to fix the P0888 Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0888 Chrysler 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 P0888 Chrysler Code

1. What are the common symptoms of OBDII code P0888 in a Chrysler vehicle?

- Common symptoms include the transmission being stuck in a single gear, difficulty shifting gears, and the vehicle going into limp mode.

2. What does the OBDII code P0888 Chrysler indicate?

- This code indicates a problem with the transmission relay always being off, leading to transmission-related issues.

3. What are the possible causes of OBDII code P0888 in a Chrysler vehicle?

- Possible causes include a faulty transmission relay, damaged wiring or connectors related to the relay, or a malfunctioning transmission control module (TCM).

4. How can I diagnose the OBDII code P0888 in my Chrysler vehicle?

- Diagnosing this code typically involves checking the transmission relay, inspecting the wiring and connectors, and testing the TCM for proper functionality.

5. Can I still drive my Chrysler vehicle with OBDII code P0888 present?

- It is not recommended to continue driving the vehicle with this code present, as it can lead to further damage to the transmission system.

6. How can I repair OBDII code P0888 in my Chrysler vehicle?

- Repairing this code may involve replacing the faulty transmission relay, repairing any damaged wiring or connectors, or reprogramming the TCM as needed.

7. Is it necessary to reset the OBDII code P0888 after repairing the issue?

- Yes, it is recommended to reset the code after repairing the issue to clear the fault code from the system and ensure proper functioning of the transmission.

8. Can a DIY enthusiast fix OBDII code P0888 in a Chrysler vehicle?

- Depending on the skill level and experience, some DIY enthusiasts may be able to diagnose and repair this issue, but it is recommended to seek professional help for complex transmission-related problems.

9. How much does it cost to fix OBDII code P0888 in a Chrysler vehicle?

- The cost of fixing this code can vary depending on the root cause of the issue, but it may involve part replacements, wiring repairs, or TCM reprogramming, potentially costing a few hundred dollars to over a thousand dollars.

10. Are there any preventative measures to avoid OBDII code P0888 in a Chrysler vehicle?

- Regular maintenance of the transmission system, including checking the relay and wiring, can help prevent issues leading to OBDII code P0888.

Discuss the causes and fixes for P0888 Chrysler OBDII Code

  • The car has been sitting for quite some time and just recently had to jump start the car. Afterwards I drove it for about 10 minutes or so. Do you think because of this and the battery being dead this is the reason for the code?

  • Yes, probably the relay got stuck. If you no other problems, then you should just clear the code.

  • Ok, thank you.

  • Got the code for Transmission relay always off in my 2005 Chrysler 300 stuck in limp mode. Replaced ignition switch and battery. Replaced transmission relay still in limp mode. What do I do now?

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