Door Control Module
The local controller inside a door, handling its window, mirror, lock and switches and reporting them to the rest of the vehicle over the body network rather than through a bundle of individual wires.
Two things about where it lives account for most of its faults. It sits inside a door, behind a plastic vapour barrier, above drain holes that block with leaf litter — so water is the dominant cause of door module trouble, and a damp connector stops carrying a signal long before anything looks damaged. And everything reaching it crosses from the A-pillar into the door through a rubber boot that flexes every single time the door is opened, tens of thousands of times. Conductors work-harden and break inside that boot, giving a fault that appears or clears as the door is moved — the single most recognisable body-network failure there is.
Which letter maps to which door follows the manufacturer's convention rather than a universal rule, and confirming it matters because the repair is a door strip. Note too that when two or more door modules go quiet together the fault is almost never in the doors — body modules share supplies and bus branches, so look at what they have in common.
Also known as: door module, dcm, door node, door electronics module, driver door module, passenger door module
Referenced by 58 codes
Codes involving this component (58)
- U0152 Lost Communication With Side Restraints Control Module — Left High
- U0153 Lost Communication With Side Restraints Control Module — Right High
- U0453 Invalid Data Received From Side Restraints Control Module — Left High
- U0454 Invalid Data Received From Side Restraints Control Module — Right High
- U0012 Medium Speed CAN Communication Bus (+) Open Moderate
- U0013 Medium Speed CAN Communication Bus (+) Low Moderate
- U0015 Medium Speed CAN Communication Bus (-) Open Moderate
- U0018 Medium Speed CAN Communication Bus (-) Shorted to Bus (+) Moderate
- U0021 Low Speed CAN Communication Bus (+) Open Moderate
- U0022 Low Speed CAN Communication Bus (+) Low Moderate
- U0024 Low Speed CAN Communication Bus (-) Open Moderate
- U0027 Low Speed CAN Communication Bus (-) Shorted to Bus (+) Moderate
- U0143 Lost Communication With Body Control Module C Moderate
- U0199 Lost Communication With Door Control Module A Moderate
- U0240 Lost Communication With Entrapment Control Module B Moderate
- U0244 Lost Communication With Running Board Control Module A Moderate
- U0251 Lost Communication With Running Board Control Module B Moderate
- U0444 Invalid Data Received From Body Control Module C Moderate
- U053A Invalid Data Received From Entrapment Control Module A Moderate
- U0541 Invalid Data Received From Entrapment Control Module B Moderate
- U0200 Lost Communication With Door Control Module B Low
- U0201 Lost Communication With Door Control Module C Low
- U0202 Lost Communication With Door Control Module D Low
- U0203 Lost Communication With Door Control Module E Low
- U0204 Lost Communication With Door Control Module F Low
Other components in Body, Interior and Safety
- Body Control Module 299
- Restraints Control Module 177
- Air Conditioning Control Module 80
- Seat Belt Pretensioner 55
- Occupant Classification Module 33
- Audio Amplifier 28
- Seat Control Module 28
- Fuel Filler Door 26
- Impact Sensor 26
- Steering Column Clockspring 24
- Steering Column Control Module 21
- Stop-Start Switch 20
- Door Switch 17
- Door Window Motor 10
- Air Conditioning Refrigerant Expansion Valve 7
- Instrument Cluster 6
- Moveable Roof Control Module 5
- Mirror Control Module 5
- Pedestrian Alert Module 3
- Front Radar Sensor 3
- Park Assist Module 3
- Remote Function Actuation Module 3
- Automated Driving System Control Module 2
- Seat Control Switch Module 2
- Speech Recognition Module 2
- Folding Top Control Module 1
- Heated Steering Wheel Module 1
- Haptic Control Module 1
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Working on this component
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
Sign in or create an account to add what you found about Door Control Module.