AutoCodes – Dodge – B1818 Dodge

B1818 Dodge Code - Rear Passenger Door Ajar Circuit Short

Quick Answer

The Body Control Module (BCM) monitors the Rear Passenger Door Ajar Switch Sense. Common causes include Faulty Door Ajar Switch Sense, Door Ajar Switch Sense harness is open or shorted, Door Ajar Switch Sense 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: B1818 Dodge indicates Rear Passenger Door Ajar Circuit Short.
Common causes: Common causes include Faulty Door Ajar Switch Sense, Door Ajar Switch Sense harness is open or shorted, Door Ajar Switch Sense 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 1,221

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1818 Dodge Description

The Body Control Module (BCM) monitors the Rear Passenger Door Ajar Switch Sense. The BCM sets the OBDII code when it detects a short to ground, short to voltage or open on the Door Ajar Switch Sense circuit.

OBDII Code B1818 Dodge - Rear Passenger Door Ajar Circuit Short - AutoCodes.com — B1818 Dodge Code - Rear Passenger Door Ajar Circuit Short

What does this mean?

What are the Possible Causes of the DTC B1818 Dodge?

Faulty Door Ajar Switch Sense
Door Ajar Switch Sense harness is open or shorted
Door Ajar Switch Sense circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1818 Dodge?

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 does this mean?

Code Tech Notes

B1818-11 REAR PASSENGER DOOR AJAR CIRCUIT SHORT TO GROUND
B1818-15 REAR PASSENGER DOOR AJAR CIRCUIT SHORT TO BATTERY OR OPEN

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1818 Dodge 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 B1818 Dodge Code

1. What are the common symptoms of OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- Common symptoms include the interior lights staying on, the door ajar warning light on the dashboard, and potential issues with power door locks.

2. What are the possible causes of OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- The code can be triggered by a short circuit in the wiring, a faulty door ajar switch, or a problem with the Body Control Module (BCM).

3. How can I diagnose the issue related to OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- You can start by visually inspecting the wiring and door ajar switch connections, testing the switch for proper operation, and using a scan tool to read the BCM data.

4. Is it safe to drive with OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- It is generally safe to drive, but it's important to address the issue promptly to prevent draining the battery or potential safety concerns with the door not latching properly.

5. Can I reset the OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short on my own?

- You can reset the code using an OBDII scanner, but it's crucial to first diagnose and fix the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- The cost of repair can vary depending on the specific cause of the issue, but it may involve replacing the door ajar switch, repairing wiring, or reprogramming the BCM, with costs ranging from $100 to $300 or more.

7. Are there any DIY tips for addressing OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- DIY tips include checking and securing wiring connections, lubricating the door latch mechanism, and testing the door ajar switch with a multimeter before seeking professional help if needed.

8. Will ignoring OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short cause any long-term damage?

- Ignoring the code may lead to a drained battery, malfunctioning interior lights, or potential safety hazards if the door fails to latch properly, so it's best to address the issue promptly.

9. How long does it typically take to repair OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- The repair time can vary based on the complexity of the issue, but it may take anywhere from 1 to 3 hours for a professional technician to diagnose and fix the problem.

10. Can extreme weather conditions affect the triggering of OBDII code B1818 Dodge for Rear Passenger Door Ajar Circuit Short?

- Extreme temperatures or moisture can potentially affect the door ajar switch or wiring, leading to intermittent issues triggering the code, so it's important to keep the components well maintained.