Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the switch that tells the car it's in 4WD Low mode. It's like a light switch that isn't working right, so the car doesn't know if it's supposed to be in a special driving mode.
The P2773 code indicates that the 4WD Low switch circuit is experiencing a low voltage condition, which means the vehicle's computer is not getting the correct signal from the switch.
The 4WD Low switch is responsible for signaling the vehicle's control module to engage the low gear range in the transfer case. A low circuit condition suggests there may be an issue with the wiring, the switch itself, or the control module that interprets the switch's position.
• 4WD Low mode not engaging
• Warning light on the dashboard
• Reduced off-road capability
• Faulty 4WD Low switch
• Damaged wiring or connectors
• Faulty control module
4WD: Four Wheel Drive, a system that powers all four wheels of a vehicle.
Circuit: A complete path that allows electricity to flow.
• Check for any visible damage to the wiring or connectors.
• Test the 4WD Low switch for proper operation.
• Use a scan tool to check for additional codes and monitor switch operation.
• Replace the faulty 4WD Low switch.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the faulty control module.
• OBD-II scan tool
• Multimeter
• Screwdriver set
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Jeep Wrangler
• Regularly inspect wiring for damage.
• Ensure connectors are secure and clean.
• Perform routine maintenance on the 4WD system.
Sensor Issue
• Avoid using 4WD Low until the issue is resolved.
• Consult a professional mechanic for diagnosis and repair.
Check with your vehicle's manufacturer for specific warranty coverage related to the 4WD system.
The P2773 code has been reported in various 4WD vehicles and is often associated with wiring issues or switch failures.
Moderate – While not immediately critical, it should be addressed to ensure 4WD functionality.
Driving without a functioning 4WD Low mode can limit off-road capabilities and may affect vehicle handling in certain conditions.
• Vehicle parked on a level surface.
• Ignition in the ON position without starting the engine.
The 4WD Low switch is typically located on the dashboard or center console, depending on the vehicle model.
Q: Can I drive my car with this code?
A: Yes, but you may not be able to use 4WD Low mode, which can affect off-road driving.
Q: Will this code affect normal driving?
A: No, it primarily affects the 4WD Low mode, not regular driving.
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