Code
B2955
HUMMER
B — Body
Driver Door Module Communication Fault
Views:
UK: 10
EN: 9
RU: 10
AI status
Completed
Completed
100%
Causes
- Faulty or intermittent connector at the driver door module
- Damaged or frayed wiring in the door harness (hinge/jamb flex area)
- Corrosion or water intrusion in connectors or module
- Blown fuse or lost module power/ground
- Failed Driver Door Module
- Body Control Module (BCM) or gateway module network fault
Symptoms
- Driver door features inoperative or intermittent (power window, lock, mirror, puddle lamp)
- Door-related warning messages or chimes
- Central locking does not respond for driver door only
- Scan tool shows no response or communication errors from DDM
- Intermittent faults that change when door is opened/closed or wiring is moved
What to check
- Read stored and pending codes with a capable scan tool; note freeze-frame and related U-codes
- Visually inspect driver door module connector and door-jamb harness for corrosion, pin damage, or water intrusion
- Check fuses and relay(s) related to driver door module power
- Verify battery voltage and good chassis/engine ground
- Backprobe DDM power and ground pins for stable voltage while operating door functions
- Inspect CAN/LIN wiring continuity and insulation, especially at the hinge flex area
Signal parameters
- DDM module supply voltage (key on and while operating functions)
- DDM ground continuity and voltage drop under load
- CAN High and CAN Low idle voltages (typical ~2.5 V each) and differential activity
- LIN bus idle voltage and message activity (if DDM uses LIN)
- Presence and frequency of expected DDM message IDs on the network
- Error counters or message timeouts reported by BCM or gateway
Diagnostic algorithm
- Connect a capable scan tool and retrieve all B- and U-codes; record freeze frame and related network codes.
- Verify vehicle battery is charged and stable. Clear codes and see if the DDM fault returns to confirm persistent vs. temporary.
- Inspect the DDM connector, door hinge harness and jamb for damage, corrosion, or water ingress. Repair any visible issues.
- Check fuses and power/ground at the DDM connector. Backprobe the power pin with key on; verify good ground and correct supply voltage.
- Monitor CAN/LIN bus with a scope or scan tool. Verify idle voltages and that DDM message IDs appear. Look for bus errors, dominant states, or missing messages.
- Wiggle test the door harness and operate door functions while monitoring communication — look for intermittent failures tied to movement.
- If wiring and connectors are good, try swapping or reprogramming the DDM per manufacturer service procedures (or connect to dealer-level tool).
- If a replacement module is installed, follow proper module programming and security procedures. After repair, clear codes and verify system operation over multiple open/close cycles.
- If communication faults persist, investigate upstream modules (BCM/gateway) and the main network harness for faults; consult factory wiring diagrams and technical service bulletins.
Likely causes
- Poor connector contact or corrosion at DDM connector or door jamb
- Wiring break or chafe in the door harness at the hinge flex point
- Loss of power or ground to the DDM (blown fuse, poor ground)
- Failed DDM
- Network bus fault (CAN/LIN) or BCM/gateway communication issue
Fault status
Status
Driver Door Module communication fault detected — module not responding or messages missing/corrupted on the vehicle network.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
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Code
B2955
HYUNDAI
B — Body
No Response NM Message (Cluster)
Views:
UK: 10
EN: 11
RU: 14
AI status
Completed
Completed
100%
Causes
- Faulty or intermittent connector at the driver door module
- Damaged or frayed wiring in the door harness (hinge/jamb flex area)
- Corrosion or water intrusion in connectors or module
- Blown fuse or lost module power/ground
- Failed Driver Door Module
- Body Control Module (BCM) or gateway module network fault
Symptoms
- Driver door features inoperative or intermittent (power window, lock, mirror, puddle lamp)
- Door-related warning messages or chimes
- Central locking does not respond for driver door only
- Scan tool shows no response or communication errors from DDM
- Intermittent faults that change when door is opened/closed or wiring is moved
What to check
- Read stored and pending codes with a capable scan tool; note freeze-frame and related U-codes
- Visually inspect driver door module connector and door-jamb harness for corrosion, pin damage, or water intrusion
- Check fuses and relay(s) related to driver door module power
- Verify battery voltage and good chassis/engine ground
- Backprobe DDM power and ground pins for stable voltage while operating door functions
- Inspect CAN/LIN wiring continuity and insulation, especially at the hinge flex area
Signal parameters
- DDM module supply voltage (key on and while operating functions)
- DDM ground continuity and voltage drop under load
- CAN High and CAN Low idle voltages (typical ~2.5 V each) and differential activity
- LIN bus idle voltage and message activity (if DDM uses LIN)
- Presence and frequency of expected DDM message IDs on the network
- Error counters or message timeouts reported by BCM or gateway
Diagnostic algorithm
- Connect a capable scan tool and retrieve all B- and U-codes; record freeze frame and related network codes.
- Verify vehicle battery is charged and stable. Clear codes and see if the DDM fault returns to confirm persistent vs. temporary.
- Inspect the DDM connector, door hinge harness and jamb for damage, corrosion, or water ingress. Repair any visible issues.
- Check fuses and power/ground at the DDM connector. Backprobe the power pin with key on; verify good ground and correct supply voltage.
- Monitor CAN/LIN bus with a scope or scan tool. Verify idle voltages and that DDM message IDs appear. Look for bus errors, dominant states, or missing messages.
- Wiggle test the door harness and operate door functions while monitoring communication — look for intermittent failures tied to movement.
- If wiring and connectors are good, try swapping or reprogramming the DDM per manufacturer service procedures (or connect to dealer-level tool).
- If a replacement module is installed, follow proper module programming and security procedures. After repair, clear codes and verify system operation over multiple open/close cycles.
- If communication faults persist, investigate upstream modules (BCM/gateway) and the main network harness for faults; consult factory wiring diagrams and technical service bulletins.
Likely causes
- Poor connector contact or corrosion at DDM connector or door jamb
- Wiring break or chafe in the door harness at the hinge flex point
- Loss of power or ground to the DDM (blown fuse, poor ground)
- Failed DDM
- Network bus fault (CAN/LIN) or BCM/gateway communication issue
Fault status
Status
Driver Door Module communication fault detected — module not responding or messages missing/corrupted on the vehicle network.
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email