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Code B2201

Symptoms

• Malfunctioning electronic components

• Warning lights on the dashboard

• Inoperative vehicle functions like locks or windows

Common Causes

• Faulty body control module

• Damaged wiring or connectors

• Interference in the CAN bus network

Glossary

BCM: Body Control Module

CAN bus: Controller Area Network bus, a vehicle bus standard designed to allow microcontrollers and devices to communicate with each other.

Related Codes

• B2200

• B2202

Laymans terms

This code means there's a problem with the car's communication system. It's like when two people are trying to talk on the phone, but there's a bad connection and they can't hear each other properly.

Explanation

The B2201 code indicates a fault in the vehicle's communication network, often related to the control module not receiving or sending the correct signals.

Technical description

B2201 is a diagnostic trouble code (DTC) for a fault in the vehicle's body control module (BCM) communication. It typically means that the BCM is not able to communicate with other modules in the vehicle over the CAN bus network.

Diagnosis steps

• Scan the vehicle with an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors related to the BCM.

• Test the BCM for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty body control module.

• Clear the code and test the system for proper operation.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$200 - $800

Difficulty level

Moderate

Commonly affected vehicles

• Dodge Charger

• Jeep Grand Cherokee

• Chrysler 300

Preventive measures

• Regularly inspect vehicle wiring and connectors.

• Avoid exposure to moisture and corrosive elements.

• Perform routine vehicle diagnostics.

Error code type

Communication Error

User experience recommendations

• Have the vehicle inspected by a professional if you notice electronic malfunctions.

• Do not ignore warning lights on the dashboard.

Warranty information

Check with your vehicle manufacturer for warranty coverage on electronic components.

Historical data

This code has been associated with communication issues in vehicles since the introduction of advanced electronic systems.

Urgency level

Moderate – It should be addressed soon to prevent further electronic malfunctions.

Legal and safety notice

Driving with unresolved communication issues may lead to safety hazards due to malfunctioning electronic systems.

Testing conditions

• Vehicle in a stationary position

• Ignition in the 'on' position

Component location

The body control module is typically located under the dashboard or behind the glove compartment.

FAQs

Q: What happens if I ignore the B2201 code?
A: Ignoring this code may lead to more serious electronic failures and potential safety issues.

Q: Can I drive my car with a B2201 code?
A: While you may be able to drive, it's not recommended due to potential electronic malfunctions.

Last updated: Oct 28, 2025 • Source: internal database
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