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 for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 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 $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
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.

OBD-II
trouble codes
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

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

P2261 OBD-II Trouble Code: Turbo/Super Charger Bypass Valve - Mechanical
P2261 P2261 code definition Turbo/Super Charger Bypass Valve - Mechanical What the P2261 code means The P2261 diagnostic trouble code is an indication that the turbo/super charger bypass valve mechanical control circuit is giving the Powertrain Control Module (PCM) a...
P0245 OBD-II Trouble Code: Turbocharger Wastegate Solenoid A Circuit Low
P0245 P0245 code definition Turbocharger Wastegate Solenoid A Circuit Low What the P0245 code means P0245 is an OBD-II generic code that the engine control module (ECM) detected the turbocharger wastegate solenoid A input circuit low is below specifications, indicating...
P0727 OBD-II Trouble Code: Engine Speed Input Circuit No Signal
P0727 code means that the engine speed input sensor is not properly functioning often due too corroded wires or defective shift solenoids.

Related questions

KOEO test code 332
Hello there, A few different things can cause insufficient EGR flow. The most likely are: a stuck closed EGR valve a failed EGR valve solenoid faulty oxygen sensor low fuel pressure exhaust leak These can also result in the reduced...
Hello, my car has no spark, no controlled ground for the fuel pump, and no injector pulse. Fuse link close to the battery and relays are good.
Hello and thank you for contacting YourMechanic. The ECU is under your passenger's side seat. You can gain access to it by simply sliding the seat all the way forward and removing the plastic cover from the ECU. You can...
My car keeps dying while I'm driving - 1999 Mitsubishi Eclipse
Check the transmission range selector (https://www.yourmechanic.com/services/transmission-position-sensor-switch-replacement) for a loose connection and make sure it is tight on the transmission. The code is coming up for the transmission range selector saying that the transmission is in gear and park at the...

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 (855) 347-2779 · hi@yourmechanic.com