AutoCodes – RAM – B1811 RAM

B1811 RAM Code - Driver Door Ajar Input Circuit High

Quick Answer

The Powertrain Control Module (PCM) receives a message over the CAN BUS from the Body Control Module (BCM) that there is a fault with the Left Front Door Switch Assembly. Common causes include Faulty Left Front Door Latch Assembly, Left Front Door Latch Assembly harness is open or shorted, Left Front Door Latch Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1811 RAM indicates Driver Door Ajar Input Circuit High.
Common causes: Common causes include Faulty Left Front Door Latch Assembly, Left Front Door Latch Assembly harness is open or shorted, Left Front Door Latch Assembly circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,368

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1811 RAM Description

The Powertrain Control Module (PCM) receives a message over the CAN BUS from the Body Control Module (BCM) that there is a fault with the Left Front Door Switch Assembly.

OBDII Code B1811 RAM - Driver Door Ajar Input Circuit High - AutoCodes.com — B1811 RAM Code - Driver Door Ajar Input Circuit High

What does this mean?

What are the Possible Causes of the DTC B1811 RAM?

Faulty Left Front Door Latch Assembly
Left Front Door Latch Assembly harness is open or shorted
Left Front Door Latch Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1811 RAM?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1811 RAM code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1811 RAM Code

1. What are the common symptoms of OBDII code B1811 RAM related to the Driver Door Ajar Input Circuit High?

- The common symptoms include the dome light staying on, false door ajar warnings on the dashboard, and issues with power door locks.

2. What are the possible causes of the B1811 RAM code indicating a Driver Door Ajar Input Circuit High?

- Possible causes can include a faulty door ajar switch, damaged wiring or connectors in the door circuit, or a malfunctioning body control module.

3. How can I diagnose the issue causing the B1811 RAM code for the Driver Door Ajar Input Circuit High?

- You can start by visually inspecting the door ajar switch and its wiring for any damage. Using a multimeter to test the continuity of the circuit can help pinpoint the issue.

4. Can a malfunctioning door latch cause the B1811 RAM code to appear?

- Yes, a faulty door latch can sometimes trigger the B1811 RAM code if it affects the proper functioning of the door ajar switch or related circuit.

5. Are there any quick repair tips for addressing the B1811 RAM code related to the Driver Door Ajar Input Circuit High?

- Quick repair tips include cleaning the door ajar switch contacts, checking and repairing any damaged wiring, and ensuring proper alignment of the door.

6. Is it safe to continue driving with the B1811 RAM code indicating a Driver Door Ajar Input Circuit High?

- While the code itself may not affect the drivability of the vehicle, it is recommended to address the issue promptly to prevent further electrical problems or inconvenience.

7. Can I reset the B1811 RAM code without fixing the underlying issue with the Driver Door Ajar Input Circuit High?

- Resetting the code without fixing the root cause will likely result in the code reappearing once the system detects the issue again.

8. How can I prevent the B1811 RAM code from recurring after repairing the Driver Door Ajar Input Circuit High?

- Properly maintaining the door ajar switch, ensuring all wiring connections are secure, and addressing any issues promptly can help prevent the code from coming back.

9. Will disconnecting the battery reset the B1811 RAM code related to the Driver Door Ajar Input Circuit High?

- Disconnecting the battery may clear the code temporarily, but it is essential to diagnose and fix the underlying problem to prevent the code from returning.

10. Should I seek professional help to diagnose and repair the B1811 RAM code for the Driver Door Ajar Input Circuit High?

- If you are not familiar with automotive electrical systems, it is advisable to consult a professional technician to accurately diagnose and repair the issue to avoid further complications.