Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a sensor in the car that helps detect crashes isn't getting enough power to work properly.
The crash sensor is not receiving the required voltage, which can affect its ability to function correctly.
The P16DD code indicates that the crash sensor, which is part of the vehicle's safety system, is experiencing an undervoltage condition. This means the electrical power supplied to the sensor is below the necessary threshold for proper operation, potentially compromising the sensor's ability to detect and respond to crash events.
• Airbag warning light on
• Safety systems not functioning properly
• Possible failure to deploy airbags in a crash
• Faulty wiring or connections
• Weak or failing battery
• Defective crash sensor
Undervoltage: A condition where the voltage is lower than the required level.
Crash Sensor: A device that detects impacts and triggers safety systems like airbags.
• Check the battery voltage and charging system.
• Inspect wiring and connections to the crash sensor.
• Test the crash sensor for proper operation.
• Replace or repair faulty wiring.
• Replace the crash sensor if defective.
• Ensure battery and charging system are functioning correctly.
• Multimeter
• OBD-II scanner
• Basic hand tools
$100 - $500
Moderate
• Chevrolet Malibu
• Buick Enclave
• GMC Acadia
• Regularly check battery health.
• Inspect electrical connections periodically.
• Ensure proper maintenance of the vehicle's electrical system.
Sensor Issue
• Have your vehicle checked by a professional if the airbag warning light is on.
• Do not ignore warning lights related to safety systems.
Check your vehicle's warranty for coverage on safety system components.
This code has been reported in vehicles with aging electrical systems or after battery replacement.
High – This code affects the vehicle's safety systems, which are critical for passenger protection.
Driving with a malfunctioning safety system may violate safety regulations and increase risk in an accident.
• Vehicle ignition on
• Battery voltage check
The crash sensor is typically located near the front of the vehicle, often behind the bumper or within the engine bay.
Q: Can I drive with the P16DD code?
A: It's not recommended to drive with this code active, as it may affect your vehicle's safety systems.
Q: How do I reset the P16DD code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
Pro · Four-system diagnostics
A handheld scanner aimed at engine, transmission, ABS, and airbag diagnostic work.
Body and airbag faults often need a scanner that can access more than generic powertrain codes.
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Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking power, ground, and continuity in body-system circuits.
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Universal · Fuse kit
Useful for electrical diagnosis when blown fuses or circuit faults are part of the troubleshooting process.
Useful when body electrical faults trace back to blown fuses or shared circuits.
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