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B1335 is a diagnostic trouble code (DTC) for "Door Ajar Right Rear 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.
The B1335 trouble code detects an issue with the right rear door ajar circuit.
The B1335 code is a generic OBD-II trouble code that signals a malfunction with the door ajar circuit for the right (passenger side) rear door. When the rear right door is not securely latched, the door ajar Warning Light will illuminate, and possibly show that specific door that is not closed. If the reading from the door ajar right rear circuit is abnormal, then the B1335 trouble code may be triggered.
Causes of the B1335 trouble code include:
When the B1335 trouble code is detected, it’s likely that the door ajar Warning Light will be constantly illuminated on the gauge cluster, because the system will sense that the right rear door is not closed. This warning light will usually stay illuminated even when the vehicle is turned off, and in many cars that means that the cabin lights will remain turned on around the clock. This will drain the battery, and usually leave the battery dead after a few hours of the vehicle being off. If this happens, the vehicle will not be able to start.
The B1335 code will be diagnosed using a standard OBD-II trouble code scanner. A reputable technician will look at the freeze frame data from the scanner to gather information about the B1335 code, and to see if any other trouble codes have been detected. In the event that numerous codes are present, the mechanic should diagnose them in the order in which the scanner displays them. The codes will then be reset, and the vehicle restarted, so the technician can check to see if the B1335 code is still present. If it is not, then it was likely triggered inaccurately, or represents an intermittent error.
If the code remains detected, then the technician will begin by visually inspecting the electrical components in the system, including all wires, connectors, fuses, and circuits. Any damaged components will need to be replaced.
Next, the mechanic will check the right rear door latch, which may require lubrication if it is jammed. If the latch is in working order, then the right rear door ajar switch should be inspected. If none of these inspections fix the problem, then the door ajar Warning Light dimmer will need to be adjusted.
Any time a component is replaced or repaired, the mechanic will need to check to see if the code is still detected, or the door ajar Warning Light is still illuminated. This will allow the mechanic to know as soon as the issue has been resolved.
The most common error when diagnosing this code comes from failing to properly follow the OBD-II diagnosis protocol. The diagnosis protocol should always be adhered to by mechanics, as it helps ensure an efficient inspection, and a repair that is free of inaccurate replacements.
Fully operational right rear door ajar switches are frequently replaced when basic electrical malfunctions are overlooked.
It is very possible that the B1335 trouble code will keep a car from turning on, because the interior lights (which often stay on as long as the door ajar Warning Light is illuminated) may have drained the battery. As soon as the B1335 code is detected, an inspection should be scheduled.
Repairs for the B1335 trouble code are:
It is sometimes possible for the right rear door ajar switch to be repaired, but it will usually require replacement if at all damaged.
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