P1902 Code - CAN Data Bus Multifunction Control Module 2
Quick Answer
The P1902 code refers to a problem with the CAN (Controller Area Network) data bus in the multifunction control module 2 of the vehicle. Common causes include Faulty multifunction control module 2, Wiring or connector issues in the CAN data bus, Corrosion or damage to the electrical connections. 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
- P1902 indicates CAN Data Bus Multifunction Control Module 2.
- Common causes
- Common causes include Faulty multifunction control module 2, Wiring or connector issues in the CAN data bus, Corrosion or damage to the electrical connections.
- 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 P1902 Description
The P1902 code refers to a problem with the CAN (Controller Area Network) data bus in the multifunction control module 2 of the vehicle. This module is responsible for coordinating various functions within the vehicle, such as lighting controls, wiper controls, and other accessories. When this code is triggered, it indicates a communication issue within this module, which can potentially lead to malfunctions in the affected systems.
Common Causes of P1902
- Faulty multifunction control module 2
- Wiring or connector issues in the CAN data bus
- Corrosion or damage to the electrical connections
- Software glitches in the module
- Electrical interference from aftermarket accessories
Symptoms of P1902
- Non-functional lights (headlights, taillights, interior lights)
- Erratic behavior of wipers
- Malfunctioning accessory controls (such as window controls)
- Warning lights illuminated on the dashboard
How to Fix P1902
- Diagnose the issue using a diagnostic scanner to confirm the P1902 code and identify the specific area of the problem.
- Inspect the wiring and connectors in the CAN data bus for any damage or corrosion and repair/replace as necessary.
- Check the multifunction control module 2 for faults and replace if needed.
- Clear the code from the vehicle's computer system using the diagnostic scanner.
- Test the affected systems to ensure proper functionality after the repair.
Cost to Fix P1902
The cost of repairing the P1902 code can vary depending on the extent of the issue and the specific repairs needed. As a rough estimate, the repair for this code could range from $200 to $500, including parts and labor. However, it's important to note that labor rates and parts prices can vary based on the location, vehicle make and model, and the specific repair shop. It's recommended to get a detailed quote from a professional technician to determine the exact cost for your vehicle.
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Code P1902 Information for Specific Makes
- P1902 Audi — Engine Coolant Blower Motor Run-On Relay Short To Ground
- P1902 Ford — Kickdown Solenoid Relay Control Circuit
- P1902 Saab — CAN Data Bus Multifunction Control Module 2
- P1902 Volkswagen — Engine Coolant Blower Motor Run-On Relay Short To Ground
Frequently Asked Questions about P1902 Code
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