P0886 OBD-II Trouble Code: Traction Control Module (TCM) Power Relay Control Circuit Low

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0886 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0886 code

P0886 is a diagnostic trouble code (DTC) for "Traction Control Module (TCM) Power Relay Control Circuit Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0886 DIAGNOSTIC Get a fair and transparent estimate upfront

P0886 code definition

The P0886 trouble code signals an error with the communication circuit in the traction control module.

What the P0886 code means

The P0886 code is a generic OBD-II trouble code that notes an issue with the traction control module (TCM) communication circuit. This communication circuit is responsible for sending live traction control data to the powertrain control module (PCM), as well as other control modules. The PCM and the other control modules then use the data from the TCM communication circuit to help determine the proper fuel delivery strategy, engine timing, RPM, and other engine performance factors. When the PCM or the other control modules are not receiving data from the TCM communication circuit, then the P0886 trouble code will be detected.

What causes the P0886 code?

The P0886 trouble code is most likely to be caused by a malfunctioning ON/OFF switch in the traction control system. This is often the result of a spilled liquid on the switch. It is also somewhat common for the electrical components of the traction control system (such as the wires, connectors, and fuses) to be damaged and defective, or for the sensor connector to have extreme corrosion on it.

What are the symptoms of the P0886 code?

The P0886 trouble code will usually be accompanied by the check engine soon warning light illuminating on the vehicle’s instrument cluster. It is likely that the traction control system will not work, meaning the vehicle will have diminished grip when driving on wet or icy roads. The P0886 code can also result in transmission issues, such as an inability for the vehicle to shift, harsh shifting, and the transmission entering “limp-in” mode. Lessened fuel efficiency is also commonly reported.

How does a mechanic diagnose the P0886 code?

The P0886 trouble code will be diagnosed with the assistance of a standard OBD-II trouble code scanner. A trained technician will use the scanner to look at the freeze frame data to gather information about the code, and to check for any additional trouble codes that have been detected. Codes should always be addressed in the order in which they appear. The codes should then be reset, and the vehicle will be restarted. The mechanic will then check to see if the code has returned. If it has not, it should be assumed that it was triggered erroneously, or represents an intermittent issue.

If the P0886 code remains on, the technician will begin with a visual inspection of the electrical components. If any damaged wires or connectors are spotted, they should be replaced. If corrosion is noticed on any connectors, they should also be replaced.

Next, the mechanic will inspect and diagnose the traction control ON/OFF switch, and replace it if necessary. If the issue is still not resolved, a connector area network (CAN) scanner can be hooked up to the vehicle, which will allow the mechanic to see detailed information about the PCM and other control modules, and see if the issue can be spotted.

After any component is replaced, the trouble codes will need to be reset, and the vehicle should be restarted, so the mechanic can see if the codes return or not. This helps ensure that the technician will know as soon as the problem has been fixed.

Common mistakes when diagnosing the P0886 code

The most frequently made diagnosis mistake with the P0886 code comes from a failure to follow the basic OBD-II trouble code diagnosis protocol. The proper protocol should be complied with at all times, step by step, to make sure that all inspections and repairs are efficient.

It is common for the entire traction control module to be replaced, when a less seious error such as a defective ON/OFF switch or damaged electrical components was the only problem.

How serious is the P0886 code?

A vehicle with a detected P0886 trouble code will usually still be drivable. However, the traction control system likely won’t work, meaning the driver should avoid slippery road conditions. The transmission may also experience some issues that will impact the drivability, and could ultimately harm the transmission. For these reasons, the P0886 code should be addressed as soon as is possible.

What repairs can fix the P0886 code?

Some repairs for the P0886 trouble code include:

Additional comments for consideration regarding the P0886 code

The P0886 trouble code only relates to vehicles that have an electronic traction control system.

Need help with a P0886 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

trouble codes
OBD-II
P0886

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0886 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,829

Rating Summary
4,442
187
48
28
124
4,442
187
48
28
124

Walter

44 years of experience
64 reviews
Walter
44 years of experience
Jeep Grand Cherokee - Check Engine Light is on - Tulsa, Oklahoma
Went above and beyond my expectations, as i was very nervous about this type of service! But to my surprise, I am absolutely satisfied with the service ! Would recommend 100X to all i know! Thanks for the care and information and time you put in to my qoute and truck@

Keith

16 years of experience
279 reviews
Keith
16 years of experience
BMW 535i xDrive - Check Engine Light is on - Kissimmee, Florida
Very personable, knowledgeable person, who provided information on my car that I was not aware of. The overall experience was great and I would definitely refer this company to my family and friends.

Luis

13 years of experience
20 reviews
Luis
13 years of experience
Audi A3 - Check Engine Light is on - Van Nuys, California
Luis was awesome. Very knowledgeable and a down to earth person. Would highly recommend and plan on using him in the future for any repair that I need!

Joel

19 years of experience
742 reviews
Joel
19 years of experience
Acura RL - Check Engine Light is on - Jacksonville, Florida
very knowledgeable and precise. able to fix electrical issues in my car. Right on time for the appointment.

More related articles

P2097 OBD-II Trouble Code: Post Catalyst Fuel Trim System Too Rich Bank 1
P2097 code definition P2097 is a general OBD-II diagnostic trouble code that indicates a fault with the post catalyst fuel trim system...
P0865 OBD-II Trouble Code: TCM Communication Circuit Low
P0865 means there is an issue with a communication circuit in the traction control module, likely due to a defective ON/OFF switch.
P0668 OBD-II Trouble Code: PCM/ECM/TCM Internal Temperature Sensor Circuit Low
P0668 means there is a problematic temperature reading from the engine or transmission. This could be due to a faulty sensor or wire, or overheating.

Related questions

2007 Dodge Grand Caravan - Codes P0700, P0734, P0732, P0871, P0846, and P0841

All of the codes that you listed indicate that you have a bad transmission. Since you have so many different codes for the transmission I do not think it is worth trying to fix the codes individually. The best course...

Transmission not shifting sometimes.

If your transmission is not shifting properly it is likely due to internal damage inside the transmission or a little fluid level. I would recommend having a certified Transmission expert inspect your transmission to determine why it will not shift....

Code P0303 cylinder 3 misfire

The symptoms you describe along with the blinking Check Engine Light and P0303 trouble code definitely tell us that you have a misfire in cylinder number 3. Your engine uses a coil on plug system. This means each individual...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com