AutoCodes – Dodge – P0885 Dodge

P0885 Dodge Code - TCM Power Relay Control Circuit/Open

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 Module (TCM) Power Relay, Transmission Control Module Power Relay harness is open or shorted, Transmission Control Module Power 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: P0885 Dodge indicates TCM Power Relay Control Circuit/Open.
Common causes: Common causes include Faulty Transmission Control Module (TCM) Power Relay, Transmission Control Module Power Relay harness is open or shorted, Transmission Control Module Power 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.

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Code Popularity 5,027

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 08, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0885 Dodge 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.
Immediately after a controller reset (ignition key turned to the run position or after cranking engine), the PCM verifies that the relay contacts are open by checking for no voltage at the switched battery terminals. After this is verified, the voltage at the pressure switches is checked. There should be no voltage on the pressure switches at this time. The PCM will then activate the relay.

OBDII Code P0885 Dodge - TCM Power Relay Control Circuit/Open - AutoCodes.com — P0885 Dodge Code - TCM Power Relay Control Circuit/Open

What does this mean?

What are the Possible Causes of the DTC P0885 Dodge?

Faulty Transmission Control Module (TCM) Power Relay
Transmission Control Module Power Relay harness is open or shorted
Transmission Control Module Power Relay circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0885 Dodge?

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 P0885 Dodge 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 P0885 Dodge Code

1. What does the OBDII code P0885 mean on a Dodge vehicle?

P0885 indicates an issue with the TCM (Transmission Control Module) power relay control circuit, specifically an open circuit or failure in the relay.

2. What are the common symptoms of the P0885 code in Dodge vehicles?

Symptoms include transmission stuck in limp mode, harsh or delayed shifting, the check engine light illuminated, and possibly reduced fuel efficiency.

3. What causes the P0885 code to appear?

Common causes include a faulty TCM power relay, damaged wiring or connectors in the relay circuit, a blown fuse, or, less commonly, a failing Transmission Control Module.

4. How do I diagnose the P0885 code?

Start by checking the TCM power relay for proper operation, inspect the wiring and connectors for damage or corrosion, and test fuses related to the transmission system.

5. Can a bad TCM power relay cause a P0885 code?

Yes, a malfunctioning or failed TCM power relay is one of the primary causes of the P0885 code.

6. Is it safe to drive with a P0885 code?

Driving with a P0885 code is not recommended, as the vehicle may be stuck in limp mode, leading to limited performance and potential further damage to the transmission.

7. How can I fix the P0885 code on my Dodge vehicle?

Repairs may include replacing the TCM power relay, repairing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.

8. Will clearing the P0885 code solve the issue?

Clearing the code without addressing the underlying problem is only a temporary fix. The code will likely return if the root cause is not resolved.

9. How much does it cost to repair a P0885 code?

Repair costs vary but typically range from $50 to $200 for a relay or wiring repair. If the TCM itself needs replacement, costs could be significantly higher.

10. Can a failing battery cause the P0885 code?

While uncommon, a weak or failing battery could potentially cause voltage issues that trigger the P0885 code. Testing the battery and charging system is recommended.