AutoCodes – Jeep – B1811 Jeep

B1811 Jeep 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 Jeep 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 3,762

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

What does this mean?

What are the Possible Causes of the DTC B1811 Jeep?

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 Jeep?

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 Jeep 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 Jeep Code

1. What are common symptoms of OBDII code B1811 in a Jeep related to the driver door ajar input circuit high?

- Common symptoms include the door ajar warning light staying on even when the door is closed, interior lights not turning off, and potential issues with the power locks.

2. What are the possible causes of OBDII code B1811 indicating a driver door ajar input circuit high in a Jeep?

- Potential causes include a faulty door ajar switch, wiring issues in the door harness, a malfunctioning body control module (BCM), or a corroded connector.

3. How can I diagnose the OBDII code B1811 for the driver door ajar input circuit high in my Jeep?

- You can start by inspecting the door ajar switch and its wiring for any damage. Using a multimeter, test the switch for continuity and check for any voltage irregularities in the circuit.

4. Can I repair the OBDII code B1811 issue related to the driver door ajar input circuit high in my Jeep myself?

- Depending on your level of expertise, you may be able to repair this issue yourself by replacing the faulty door ajar switch, repairing any damaged wiring, or resetting the BCM.

5. Are there any temporary solutions to consider for the OBDII code B1811 in a Jeep indicating a driver door ajar input circuit high?

- As a temporary solution, you can try manually pressing and releasing the door ajar switch to see if it helps reset the sensor and temporarily resolve the issue.

6. Is it safe to continue driving my Jeep with the OBDII code B1811 related to the driver door ajar input circuit high?

- While the issue may not affect the drivability of the vehicle, it is recommended to address the problem promptly to prevent potential battery drain or other electrical issues.

7. How much does it typically cost to repair the OBDII code B1811 for the driver door ajar input circuit high in a Jeep?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can a faulty driver door ajar input circuit high code in a Jeep cause any other problems in the vehicle?

- Yes, if left unresolved, the issue can lead to battery drainage, malfunctioning interior lights, and potential safety concerns related to the door not latching properly.

9. Will resetting the OBDII code B1811 related to the driver door ajar input circuit high in my Jeep solve the problem?

- Resetting the code may temporarily clear the warning light, but if the underlying issue with the door ajar input circuit is not addressed, the problem is likely to reoccur.

10. How long does it typically take to repair the OBDII code B1811 for the driver door ajar input circuit high in a Jeep?

- The repair time can vary based on the exact cause of the issue and the complexity of the repair, but it may take anywhere from 1 to 3 hours at a professional repair shop.