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B2140 Chrysler Code - Ignition Start Control Circuit High

Quick Answer

The diagnostic trouble code (DTC) B2140 indicates a problem within the ignition start control circuit of Chrysler vehicles. Common causes include Faulty Ignition Switch: A malfunctioning ignition switch can fail to send the correct signals to the PCM, Wiring Issues: Damaged, corroded, or frayed wiring in the ignition start control circuit can lead to high voltage readings, Defective Starter Relay: A faulty starter relay may cause incorrect voltage levels in the circuit. 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
B2140 Chrysler indicates Ignition Start Control Circuit High.
Common causes
Common causes include Faulty Ignition Switch: A malfunctioning ignition switch can fail to send the correct signals to the PCM, Wiring Issues: Damaged, corroded, or frayed wiring in the ignition start control circuit can lead to high voltage readings, Defective Starter Relay: A faulty starter relay may cause incorrect voltage levels in the circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 01, 2024
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Code B2140 Chrysler Description

The diagnostic trouble code (DTC) B2140 indicates a problem within the ignition start control circuit of Chrysler vehicles. This code is triggered when the powertrain control module (PCM) detects a voltage level in the ignition start control circuit that is higher than expected. The ignition start control circuit is crucial for the proper operation of the vehicle's starting system, as it facilitates communication between the ignition switch, the PCM, and other related components.

OBDII Code B2140 Chrysler - Ignition Start Control Circuit High
B2140 Chrysler Code - Ignition Start Control Circuit High

Common Causes of B2140 Chrysler

  1. Faulty Ignition Switch: A malfunctioning ignition switch can fail to send the correct signals to the PCM.
  2. Wiring Issues: Damaged, corroded, or frayed wiring in the ignition start control circuit can lead to high voltage readings.
  3. Defective Starter Relay: A faulty starter relay may cause incorrect voltage levels in the circuit.
  4. PCM Malfunction: A failure within the powertrain control module itself can lead to erroneous readings and circuit issues.
  5. Poor Ground Connections: Inadequate grounding in the electrical system can cause voltage spikes and erratic behavior in the ignition start control circuit.

Symptoms of B2140 Chrysler

  1. No Start Condition: The engine may fail to crank or start altogether.
  2. Intermittent Starting Issues: The vehicle may start inconsistently, requiring multiple attempts to engage the starter.
  3. Electrical Malfunctions: Other electrical components may exhibit erratic behavior, such as dashboard lights flickering or power windows malfunctioning.
  4. Check Engine Light: The illumination of the check engine light on the dashboard, indicating a fault in the ignition start control circuit.
  5. Unusual Sounds: Clicking or grinding noises when attempting to start the vehicle, which may indicate starter motor issues.

How to Fix B2140 Chrysler

  1. Visual Inspection: Begin with a thorough visual inspection of the ignition start control circuit wiring and connectors for signs of damage, corrosion, or loose connections.
  2. Test the Ignition Switch: Use a multimeter to check the functionality of the ignition switch, ensuring it sends the correct voltage signals to the PCM.
  3. Inspect the Starter Relay: Test the starter relay for proper operation and replace it if it is found to be defective.
  4. Check Ground Connections: Ensure that all ground connections related to the ignition start control circuit are clean, secure, and free of corrosion.
  5. PCM Diagnosis: If all other components are functioning correctly, consider testing or reprogramming the PCM to rule out internal faults.

Cost to Fix B2140 Chrysler

The cost of repairing the B2140 code can vary widely depending on the specific issue identified during diagnosis. On average, repairs may range from $100 to $600. This estimate includes parts such as ignition switches, relays, or wiring harnesses, and labor costs, which typically range from $80 to $150 per hour. Factors such as the vehicle's make and model, engine type, and local labor rates can significantly influence the total cost. In metropolitan areas or at dealerships, labor rates may be higher, while independent shops often offer more competitive pricing. It is advisable to obtain quotes from local repair shops for a more precise estimate tailored to your specific situation.

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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 B2140 Chrysler Code

1. What are the common symptoms of OBDII code B2140 in a Chrysler related to Ignition Start Control Circuit High?

The common symptoms include difficulty starting the vehicle, engine stalling, and possible issues with the ignition system.

2. What are the typical causes of OBDII code B2140 in a Chrysler?

The code B2140 typically indicates a problem with the ignition start control circuit, which could be caused by a faulty ignition switch, wiring issues, or a defective ignition start control module.

3. How can I diagnose the source of OBDII code B2140 in my Chrysler?

Diagnosing the code involves inspecting the ignition system components, checking the wiring for any damage or loose connections, and using a multimeter to test for continuity and voltage in the circuit.

4. Can a DIYer repair OBDII code B2140 in a Chrysler, or is it best left to professionals?

While some experienced DIYers may be able to diagnose and repair the issue causing code B2140, it is recommended to seek professional help, especially if dealing with complex wiring or electronic components.

5. Are there any common repair tips for fixing OBDII code B2140 in a Chrysler?

Some common repair tips include ensuring all electrical connections are secure, replacing any damaged wiring, and checking for any recalls or technical service bulletins related to the issue.

6. Can driving with OBDII code B2140 in a Chrysler cause further damage to the vehicle?

Continuing to drive with the code B2140 present may lead to further issues with the ignition system and could potentially result in the vehicle not starting at all. It is best to address the problem promptly.

7. How much can I expect to pay for repairing OBDII code B2140 in a Chrysler at a dealership or repair shop?

The cost of repairing OBDII code B2140 can vary depending on the specific cause of the issue and the labor rates of the repair facility. It is advisable to obtain multiple quotes for comparison.

8. Is it possible for OBDII code B2140 in a Chrysler to clear on its own without any repairs?

While some codes may clear on their own after a certain number of drive cycles if the underlying issue is resolved, it is not recommended to rely on this method. It is best to diagnose and repair the problem to prevent further issues.

9. Can extreme weather conditions affect the likelihood of OBDII code B2140 appearing in a Chrysler?

Extreme temperatures or moisture can potentially impact the electrical components involved in the ignition system, increasing the likelihood of issues that trigger code B2140.

10. Will disconnecting the battery reset OBDII code B2140 in a Chrysler?

Disconnecting the battery may reset the code temporarily, but if the underlying issue is not addressed, the code is likely to reappear after a few drive cycles. It is important to diagnose and repair the problem to prevent recurrence.

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