AutoCodes – Jeep – B2340 Jeep

B2340 Jeep Code - Front/Rear Washer Motor Control Circuit Open

Quick Answer

The Front Control Module (FCM) monitors the Front/Rear Washer Motor. Common causes include Faulty Front/Rear Washer Motor, Front/Rear Washer Motor harness is open or shorted, Front/Rear Washer Motor 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
B2340 Jeep indicates Front/Rear Washer Motor Control Circuit Open.
Common causes
Common causes include Faulty Front/Rear Washer Motor, Front/Rear Washer Motor harness is open or shorted, Front/Rear Washer Motor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 506
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 12, 2019
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Code B2340 Jeep Description

The Front Control Module (FCM) monitors the Front/Rear Washer Motor. The FCM sets the OBDII code when the Front/Rear Washer Motor is not to factory specifications.
OBDII Code B2340 Jeep - Front/Rear Washer Motor Control Circuit Open - AutoCodes.com
B2340 Jeep Code - Front/Rear Washer Motor Control Circuit Open

What are the Possible Causes of the DTC B2340 Jeep?

  • Faulty Front/Rear Washer Motor
  • Front/Rear Washer Motor harness is open or shorted
  • Front/Rear Washer Motor circuit poor electrical connection
  • Faulty Front Control Module (FCM)

How to Fix the DTC B2340 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 B2340 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 B2340 Jeep Code

1. What does the OBDII code B2340 mean for a Jeep?

Code B2340 indicates an open circuit in the control system for the front or rear washer motor.

2. What are the common symptoms of code B2340 on a Jeep?

Symptoms include the front or rear washer fluid not spraying, washer motor noise being absent, or intermittent operation.

3. What causes the B2340 code to be triggered?

Common causes include damaged wiring, a faulty washer motor, a blown fuse, or a malfunctioning washer switch.

4. How can I diagnose the B2340 code on my Jeep?

Check the washer motor circuit for open or damaged wiring, inspect the fuse, and test the functionality of the washer motor and switch.

5. Can I still drive my Jeep with the B2340 code active?

Yes, the vehicle is drivable, but the washer system will not function properly, which may reduce visibility in adverse weather.

6. How do I fix the B2340 code on a Jeep?

Repairs may include replacing damaged wiring, installing a new washer motor, replacing blown fuses, or repairing the washer switch.

7. Will clearing the B2340 code solve the problem?

Clearing the code will reset the system temporarily, but the underlying issue must be fixed to prevent the code from returning.

8. How much does it cost to repair code B2340 on a Jeep?

Costs vary depending on the issue but typically range from $50-$150 for minor repairs, such as replacing a fuse or wiring, and up to $200 for a new washer motor.

9. Can a faulty washer motor alone cause the B2340 code?

Yes, a failed washer motor can disrupt the circuit and trigger this code.

10. Is the B2340 code related to front and rear washer systems simultaneously?

It can affect either the front or rear washer system, depending on which circuit is open.

Discuss the causes and fixes for B2340 Jeep OBDII Code

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