B1986 OBD-II Trouble Code: Driver's Seat Seatback Autoglide Rearward Switch Circuit Failure

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the B1986 code

B1986 is a diagnostic trouble code (DTC) for "Driver's Seat Seatback Autoglide Rearward Switch Circuit Failure". 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 B1986 DIAGNOSTIC Get a fair and transparent estimate upfront

B1986 code definition

A B1986 trouble code indicates that the Engine Control Unit (ECU) has detected an unspecified circuit failure in the driver seat's autoglide rearward switch circuit.

What the B1986 code means

The autoglide feature helps enable easier access to the driver's seat. When the engine's ignition is triggered, the seat will glide closer to the steering wheel. Conversely, when the engine is turned off, the seat will automatically pull out slightly, offering more room to move out. With a B1986 circuit failure, the autoglide won't shift back on its own when the engine is turned off.

What causes the B1986 code?

If the ECU has reported a failure in the autoglide rearward switch circuit, there is very likely to be a faulty or failed segment at some point of the circuit. Issues in the wiring related to the switch circuit may be to blame for the B1986 code. Disconnected, damaged, faulty and improperly installed wiring can account for the issue. In some, rarer cases, the ECU itself may be reporting the switch circuit's failure falsely, and may be faulty itself. Although this possibility should only be considered once all other explanations have been exhausted, false trouble codes have been reported as a result of malfunctioning ECUs.

What are the symptoms of the B1986 code?

If a B1986 has occurred, the autoglide feature will not work when the engine is shut off. Considering the close relation between the two, it is likely the autoglide won't work moving forward either. Moreover, the B1986 will come along with a stored trouble code and illuminated check engine lamp. These are present for a purely diagnostic purpose, and may be disregarded if you have already identified the issue at hand.

How does a mechanic diagnose the B1986 code?

A mechanic may first diagnose the B1986 trouble code by scanning the code on the ECU with an OBD-II code scanner. From there, the circuit should be accessed and examined thoroughly for signs of disconnection, damage, faultiness and/or corrosion. The seat sensor should be examined as well for signs of fault. It may be found directly underneath the driver's seat.

Common mistakes when diagnosing the B1986 code

The B1986 is a body-related (or "B" class) trouble code. Body codes may stand for different issues depending on the type of vehicle and its manufacturer. Although your OBD-II code scanner may specify the code description for you, make sure that you don't confuse one code description for another. This can result in needless repairs for functional components, and will leave the actual problem unresolved. Refer to your vehicle manual if you're unsure.

How serious is the B1986 code?

The B1986 trouble code doesn't affect a vehicle's drivability, nor does it make access to the driver's seat significantly more difficult. The autoglide feature is a subtle luxury, and unless the B1986 code has come alongside other, more pressing issue, you shouldn't need to worry about it. Address the code at your own discretion.

What repairs can fix the B1986 code?

The autoglide sensor should be repaired or replaced if it's been found out as faulty. Any concerns with electrical wiring should be addressed, either with regards to replacing, repairing or simply rewiring the segments at fault. If the ECU has mistakenly reported the issue and is faulty, it will need to be repaired and reprogrammed, or replaced outright. Following any repairs made to address the B1986 trouble code, the vehicle should be quickly retested. Starting up the car and testing the seat will quickly allow you to know whether or not the issue has actually be resolved. If it hasn't, return to the diagnostic stage and see if you missed out on anything.

Additional comments for consideration regarding the B1986 code

Issues relating to the diver's seat should be taken more seriously than other eats, given the fact they may affect (and most often hinder) driving performance.

Need help with a B1986 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 1-800-701-6230.

trouble codes
OBD-II
B1986

No more waiting rooms! Our mechanics will come to you to diagnose and fix the B1986 code.

SCHEDULE B1986 DIAGNOSTIC
Get a $20 credit for the follow-up repair

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

5,064

Rating Summary
4,665
194
48
27
130
4,665
194
48
27
130

Mario

8 years of experience
22 reviews
Mario
8 years of experience
Chrysler PT Cruiser - Check Engine Light is on - Los Angeles, California
He was very courteous and knowledgeable. You can tell he knows his trade. Satisfied with his service.

Yoel

8 years of experience
91 reviews
Yoel
8 years of experience
Nissan Versa Note - Check Engine Light is on - Upper Darby, Pennsylvania
Yoel is very competent and provides great customer service. He took the time to explain and show me exactly what was going with my car. I will definitely use him again and recommend him to others.

Jason

31 years of experience
148 reviews
Jason
31 years of experience
Ford Explorer - Check Engine Light is on - Phoenix, Arizona
Jason was on time, friendly, explained everything he was doing and let me know the other services available, so when Jason comes back to install the new part I am having the oil changed too.

DeVaughn

25 years of experience
1 reviews
DeVaughn
25 years of experience
BMW X3 - Check Engine Light is on - Moreno Valley, California
The mechanic arrived on time, completed the work, which was replacement of an oxygen sensor, in a timely and professional manner.


More related articles

P0822 OBD-II Trouble Code: Gear Lever Y Position Circuit
P0822 means there is a transmission range sensor issue. This could be due to the sensor not being adjusted correctly or it could be broken.
P0191 OBD-II Trouble Code: Fuel Rail Pressure Sensor Circuit Range/Performance
P0191 trouble code definition Fuel Rail Pressure Sensor Circuit Range/Performance is the technical definition for this code Note: This code may be...
P0153 OBD-II Trouble Code: 02 Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0153 trouble code definition 02 Sensor Circuit Slow Response (Bank 2 Sensor 1) What the P0153 code means The P0153 trouble code...

Related questions

Car will crank, doesnt stay running

Hello and thanks for your question. Ground wires will not have a voltage on them. Preform a resistance check on all of the pins to the harness plug. There should be resistance for the computer, high resistance for the power,...

Cranks but won't start

Hello, thanks for writing in about your Dodge Ram 1500. I'm curious if your Check Engine light on. Checking the basics will help here: will it crank but not start? If so, is there spark at the plugs and does...

How many crankshaft position sensors are on a 2011 GMC Terrain?

Usually there will only be one crankshaft position sensor. However, there is also a camshaft position sensor as well. It is more likely that there is multiple cam sensors than crank sensors. It is possible for engines to have anywhere...

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