B1336 OBD-II Trouble Code: Door Ajar Right Rear Circuit Open

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

Red-stars EXCELLENT RATING ON

Cost of diagnosing the B1336 code

B1336 is a diagnostic trouble code (DTC) for "Door Ajar Right Rear Circuit Open". 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 B1336 DIAGNOSTIC Get a fair and transparent estimate upfront

B1336 code definition

The B1336 trouble code notes an error with the door ajar right rear circuit.

What the B1336 code means

The B1336 code is a standard OBD-II trouble code that detects a problem with the right (passenger side) rear door ajar circuit. The door ajar Warning Light will illuminate on the gauge cluster when the system detects that the right rear door is not completely latched. Sometimes the warning light will specify which door isn’t closed, but in most models it will simply note that a door is open. When the right rear door ajar circuit reading is not as it should be, then the B1336 trouble code will be stored.

What causes the B1336 code?

A few different things can cause the B1336 trouble code:

  • Faulty right rear door ajar switch
  • Defective door ajar circuit
  • Jammed or faulty right rear door latch
  • Faulty electrical components in the door ajar system
  • Incorrectly adjusted door ajar Warning Light dimmer

What are the symptoms of the B1336 code?

A vehicle with a detected B1336 trouble code will likely have a constantly illuminated door ajar Warning Light, even when all of the doors are closed. The warning light will likely stay lit when the vehicle is turned off. In many cars, the interior lights will stay lit as long as the door ajar Warning Light is illuminated, which means that the cabin lights will stay on even when the car is turned off. This can quickly drain the vehicle’s battery, and may result in the car being unable to turn on.

How does a mechanic diagnose the B1336 code?

The B1336 code should be diagnosed with the help of a standard OBD-II trouble code scanner. A trained technician will use the scanner to view the freeze frame data and assess the B1336 code, while also checking to see if there are any other trouble codes detected. If multiple codes are present, then the technician will inspect them in the order in which they appear. Next, the mechanic will reset the trouble codes, restart the vehicle, and look to see if the B1336 code is still detected. If not, then it most likely is the result of an intermittent error, or possibly an inaccurate detection.

If the B1336 trouble code is still present, then a visual inspection will be performed on the electrical components in the door ajar system. Any blown fuses, open circuits, corroded connectors, or shorted wires will need to be replaced before the inspection is continued. The technician will then inspect the right rear door latch to see if it is partially stuck. If it is, it can usually be fixed with lubrication. Next, the right rear door ajar switch will be thoroughly checked, and repaired or replaced if necessary. If none of these components are faulty, then the door ajar Warning Light dimmer is in need of an adjustment.

After the mechanic replaces any component, the trouble codes will again be reset, the vehicle restarted, and the B1336 code checked for. This helps the technician know as soon as the problem is resolved.

Common mistakes when diagnosing the B1336 code

The most frequently made mistake when diagnosing this code is the failure to abide by the OBD-II trouble code diagnosis protocol. It is imperative that mechanics always follow the protocol step by step, as this guarantees diagnoses that are accurate and efficient.

Right rear door ajar switches are frequently replaced unnecessarily because an electrical issue was overlooked.

How serious is the B1336 code?

The B1336 trouble code may keep a vehicle from starting, because the interior lights may stay lit long enough to entirely drain the battery. To keep this issue from occurring, it’s important to schedule an inspection as soon as the B1336 code is noted.

What repairs can fix the B1336 code?

Common repairs for the B1336 trouble code are:

  • Replacing of the right rear door ajar switch
  • Lubricating of the right rear door latch
  • Replacing electrical components
  • Adjusting the door ajar Warning Light dimmer

Additional comments for consideration regarding the B1336 code

A right rear door ajar switch that is defective may be repairable, though in most cases it will need to be replaced.

Need help with a B1336 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
B1336

No more waiting rooms! Our mechanics will come to you to diagnose and fix the B1336 code.

SCHEDULE B1336 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

P0767 OBD-II Trouble Code: Shift Solenoid D Stuck On
P0767 code means there is an abnormality detected in shift solenoid "D" often due too transmission blockages or low/dirty fluids.
P0895 OBD-II Trouble Code: Shift Time Too Short
P0895 code means that there is an abnormality in the shift time between individual gears due to transmission blockage, failure, or dirty fluid.
P0755 OBD-II Trouble Code: Shift Solenoid B Malfunction
P0755 code means that there is a problem with the the shift solenoid B due to transmission failure, low or dirty fluid, or a faulty solenoid.

Related questions

P0101
Hello. P0101 is the code for an issue with the MAF sensor signal or circuit. P0101 indicates that the computer has detected the MAF signal has fallen out of the acceptable range. This is usually caused by a faulty MAF...
Engine light on. P000B Code
Hello. When this code comes up it is because the computer is not detecting that the camshaft is moving as it should when the variable valve timing system is functioning. This can be caused by a number of things. It...
3 warning lights on, power steering, VMS, and electronic lights. Any clue?
The fact that these lights are on is a warning to the driver that there are fault codes stored because one of more control systems have detected a problem. The vehicle will have to be read with a code scanner...

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