Code
B2208
LAND ROVER
B — Body
Communication link to display and toggle module error
Views:
UK: 6
EN: 6
RU: 5
AI status
Completed
Completed
100%
Causes
- Damaged or corroded connector at the Display and Toggle Module
- Open, short, or high resistance in CAN/data wiring
- Faulty Display and Toggle Module
- Network/BUS fault (bus-off, excessive errors)
- Incorrect or corrupted module software/firmware
- Low battery or intermittent battery/charging supply
Symptoms
- Display or toggle switches unresponsive or intermittent
- Warning messages or loss of specific display features
- Related functions disabled (lighting, info screens) or incorrect indications
- MIL or stored communication DTCs present
- Intermittent operation that may clear and return
What to check
- Read and record all stored DTCs and freeze-frame data with a diagnostic scanner
- Check for other communication codes (U0xxx) on the network
- Visually inspect module connector and wiring for corrosion, bent pins or damage
- Verify battery voltage and charging system under load
- Check fuses and related power/ground circuits for the module
- Wiggle test connectors/wiring while monitoring for changes in communication status
Signal parameters
- Network type: High-speed CAN (ISO 11898) or manufacturer body CAN — check OEM spec for vehicle
- Typical bus data rate: commonly 250–500 kbps on high-speed CAN networks (confirm with OEM)
- Idle voltages: CAN_H and CAN_L each near mid-rail when idle; differential ~0 V idle then +/-2 V when active (verify with scope)
- Expected: periodic messages from Display/Toggle Module at tens to hundreds of milliseconds (use OEM message list)
- Watch for bus-off state, excessive error frames, or missing message IDs for the module
Diagnostic algorithm
- Connect a diagnostic scanner and record all codes, freeze-frame, and module network status. Note related U-codes.
- Confirm battery voltage (12.4–12.8 V at rest) and inspect charging system; low voltage can cause comm faults.
- Visually inspect the Display and Toggle Module connectors, pins and harness for corrosion, bent pins, water ingress or aftermarket splices.
- Check module power and ground circuits: verify fuses, relays and ground integrity (measure voltage at module power pin with key on).
- With a scan tool or CAN monitor, observe live bus traffic at the module connector: confirm expected message IDs, frequencies and absence of error frames.
- Use an oscilloscope to check CAN_H/CAN_L waveforms at the module for correct idle voltages, differential signaling, and absence of excessive noise or distortion.
- Measure resistance between CAN_H and CAN_L and to chassis/12V to detect shorts or missing termination (compare to OEM spec).
- If bus errors are present, isolate sections by disconnecting modules one at a time (follow safe procedures) to identify a faulted device or harness segment.
- If wiring and power/ground are good but communication is still missing, consider reflashing/updating module software per OEM bulletin or replacing the Display and Toggle Module.
- After repair, clear codes and perform a road test to confirm the fault does not reappear.
Likely causes
- Wiring/connectors at the module (loose pin, corrosion)
- CAN bus short to ground or 12 V, or open circuit
- Module internal failure or software crash
- Other module causing bus errors (bus loading or termination fault)
Fault status
Status
Communication error with Display and Toggle Module — messages absent, invalid or interrupted on the vehicle network.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
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Code
B2208
MITSUBISHI
B — Body
SRS ECU internal error 2
Views:
UK: 8
EN: 10
RU: 7
AI status
Completed
Completed
100%
Causes
- Damaged or corroded connector at the Display and Toggle Module
- Open, short, or high resistance in CAN/data wiring
- Faulty Display and Toggle Module
- Network/BUS fault (bus-off, excessive errors)
- Incorrect or corrupted module software/firmware
- Low battery or intermittent battery/charging supply
Symptoms
- Display or toggle switches unresponsive or intermittent
- Warning messages or loss of specific display features
- Related functions disabled (lighting, info screens) or incorrect indications
- MIL or stored communication DTCs present
- Intermittent operation that may clear and return
What to check
- Read and record all stored DTCs and freeze-frame data with a diagnostic scanner
- Check for other communication codes (U0xxx) on the network
- Visually inspect module connector and wiring for corrosion, bent pins or damage
- Verify battery voltage and charging system under load
- Check fuses and related power/ground circuits for the module
- Wiggle test connectors/wiring while monitoring for changes in communication status
Signal parameters
- Network type: High-speed CAN (ISO 11898) or manufacturer body CAN — check OEM spec for vehicle
- Typical bus data rate: commonly 250–500 kbps on high-speed CAN networks (confirm with OEM)
- Idle voltages: CAN_H and CAN_L each near mid-rail when idle; differential ~0 V idle then +/-2 V when active (verify with scope)
- Expected: periodic messages from Display/Toggle Module at tens to hundreds of milliseconds (use OEM message list)
- Watch for bus-off state, excessive error frames, or missing message IDs for the module
Diagnostic algorithm
- Connect a diagnostic scanner and record all codes, freeze-frame, and module network status. Note related U-codes.
- Confirm battery voltage (12.4–12.8 V at rest) and inspect charging system; low voltage can cause comm faults.
- Visually inspect the Display and Toggle Module connectors, pins and harness for corrosion, bent pins, water ingress or aftermarket splices.
- Check module power and ground circuits: verify fuses, relays and ground integrity (measure voltage at module power pin with key on).
- With a scan tool or CAN monitor, observe live bus traffic at the module connector: confirm expected message IDs, frequencies and absence of error frames.
- Use an oscilloscope to check CAN_H/CAN_L waveforms at the module for correct idle voltages, differential signaling, and absence of excessive noise or distortion.
- Measure resistance between CAN_H and CAN_L and to chassis/12V to detect shorts or missing termination (compare to OEM spec).
- If bus errors are present, isolate sections by disconnecting modules one at a time (follow safe procedures) to identify a faulted device or harness segment.
- If wiring and power/ground are good but communication is still missing, consider reflashing/updating module software per OEM bulletin or replacing the Display and Toggle Module.
- After repair, clear codes and perform a road test to confirm the fault does not reappear.
Likely causes
- Wiring/connectors at the module (loose pin, corrosion)
- CAN bus short to ground or 12 V, or open circuit
- Module internal failure or software crash
- Other module causing bus errors (bus loading or termination fault)
Fault status
Status
Communication error with Display and Toggle Module — messages absent, invalid or interrupted on the vehicle network.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
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Code
B2208
Other
B — Body
Communication Link to Display and Switch Module Error
Views:
UK: 13
EN: 17
RU: 13
AI status
Completed
Completed
100%
Causes
- Damaged or corroded connector at the Display and Toggle Module
- Open, short, or high resistance in CAN/data wiring
- Faulty Display and Toggle Module
- Network/BUS fault (bus-off, excessive errors)
- Incorrect or corrupted module software/firmware
- Low battery or intermittent battery/charging supply
Symptoms
- Display or toggle switches unresponsive or intermittent
- Warning messages or loss of specific display features
- Related functions disabled (lighting, info screens) or incorrect indications
- MIL or stored communication DTCs present
- Intermittent operation that may clear and return
What to check
- Read and record all stored DTCs and freeze-frame data with a diagnostic scanner
- Check for other communication codes (U0xxx) on the network
- Visually inspect module connector and wiring for corrosion, bent pins or damage
- Verify battery voltage and charging system under load
- Check fuses and related power/ground circuits for the module
- Wiggle test connectors/wiring while monitoring for changes in communication status
Signal parameters
- Network type: High-speed CAN (ISO 11898) or manufacturer body CAN — check OEM spec for vehicle
- Typical bus data rate: commonly 250–500 kbps on high-speed CAN networks (confirm with OEM)
- Idle voltages: CAN_H and CAN_L each near mid-rail when idle; differential ~0 V idle then +/-2 V when active (verify with scope)
- Expected: periodic messages from Display/Toggle Module at tens to hundreds of milliseconds (use OEM message list)
- Watch for bus-off state, excessive error frames, or missing message IDs for the module
Diagnostic algorithm
- Connect a diagnostic scanner and record all codes, freeze-frame, and module network status. Note related U-codes.
- Confirm battery voltage (12.4–12.8 V at rest) and inspect charging system; low voltage can cause comm faults.
- Visually inspect the Display and Toggle Module connectors, pins and harness for corrosion, bent pins, water ingress or aftermarket splices.
- Check module power and ground circuits: verify fuses, relays and ground integrity (measure voltage at module power pin with key on).
- With a scan tool or CAN monitor, observe live bus traffic at the module connector: confirm expected message IDs, frequencies and absence of error frames.
- Use an oscilloscope to check CAN_H/CAN_L waveforms at the module for correct idle voltages, differential signaling, and absence of excessive noise or distortion.
- Measure resistance between CAN_H and CAN_L and to chassis/12V to detect shorts or missing termination (compare to OEM spec).
- If bus errors are present, isolate sections by disconnecting modules one at a time (follow safe procedures) to identify a faulted device or harness segment.
- If wiring and power/ground are good but communication is still missing, consider reflashing/updating module software per OEM bulletin or replacing the Display and Toggle Module.
- After repair, clear codes and perform a road test to confirm the fault does not reappear.
Likely causes
- Wiring/connectors at the module (loose pin, corrosion)
- CAN bus short to ground or 12 V, or open circuit
- Module internal failure or software crash
- Other module causing bus errors (bus loading or termination fault)
Fault status
Status
Communication error with Display and Toggle Module — messages absent, invalid or interrupted on the vehicle network.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Similar codes
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Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
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Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
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