Code
B2203
HUMMER
B — Body
Right Front Window Switch Stuck in Down Position
Views:
UK: 5
EN: 19
RU: 8
AI status
Completed
Completed
100%
Causes
- Failed or mechanically stuck right front window switch
- Short to ground or short to battery in the switch wiring
- Open circuit or high resistance in switch harness or connector
- Window regulator or glass mechanically jammed causing switch to remain engaged
- Water intrusion/corrosion in switch or connector
- Faulty Body Control Module (BCM) or window control module software/firmware fault
Symptoms
- Right front window appears to be continuously trying to go down or will not respond to inputs
- Right front window switch feels physically stuck or stays depressed
- Right front window will not move up or down, or moves only in one direction
- Intermittent operation of the right front window
- Related fuse may be blown; possible clicking/relay activity from BCM
- Dash or door chime/warning may indicate window fault
What to check
- Retrieve freeze frame and all related body codes with a scan tool; note current state of switch input
- Visually inspect right front door switch for debris, corrosion, or physical sticking
- Operate the right front switch while observing window movement and listening for motor operation
- Check fuses and ground(s) for the power window circuit
- Inspect wiring and connector at the switch for corrosion, bent pins, or water intrusion
- Perform a wiggle test on the switch harness while operating the switch to reproduce the fault
Signal parameters
- Reference input to switch: nominal reference voltage supplied by vehicle (commonly 5 V or battery-derived, varies by model)
- Switch output: should toggle between inactive level and active level when pressed (active = pulled to ground or driven to battery depending on design)
- Continuity across closed switch contacts: low ohms (near 0 Ω) when pressed; open (very high Ω) when released
- When switch is NOT pressed the switch output should NOT show continuous active state
- Motor circuit voltage at regulator: near battery voltage when motor commanded; no constant supply when switch neutral
Diagnostic algorithm
- Connect a scan tool; record B2203 and any related codes, and monitor switch input data and BCM/window module statuses
- Visually inspect the right front switch and door harness for contamination, bent pins, damage, or moisture; repair any obvious damage
- Operate the switch and observe the switch input parameter on the scan tool to confirm the input is stuck in the down position
- With key on, measure reference voltage and switch output at the switch connector using a multimeter; compare with expected behavior (output should change when pressing/releasing)
- If output is continuously active at the switch connector, disconnect the switch and check the circuit again to determine if the wiring is shorted (if active persists, suspect wiring/short to battery or module)
- If output becomes inactive when switch is disconnected, bench-test or replace the switch and retest
- Check for voltage at the window motor/regulator when commanding the window. If the motor sees constant voltage without command, suspect BCM/module fault or short
- Manually inspect and, if necessary, unbolt the door panel to check regulator for mechanical binding; manually move glass to verify it is not jammed
- If wiring and switch check good, check BCM/window module grounds and data bus communications (scan tool for U-codes). Reprogram/replace module only after other causes are ruled out
- Clear codes and perform full functional test of window and switch to confirm repair
Likely causes
- Failed right front window switch (most common)
- Wiring short or corrosion at switch connector
- Mechanically jammed regulator or glass preventing normal switch operation
- Contaminated/shorted switch from water ingress
- Faulty BCM/window module (least common)
Fault status
Status
Stored DTC B2203 — Right Front Window Switch input stuck in DOWN position (continuous activation). Fault logged by body/window control module; input circuit indicates persistent active state.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
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Code
B2203
MITSUBISHI
B — Body
Chassis No. not programmed
Views:
UK: 9
EN: 22
RU: 10
AI status
Completed
Completed
100%
Causes
- Failed or mechanically stuck right front window switch
- Short to ground or short to battery in the switch wiring
- Open circuit or high resistance in switch harness or connector
- Window regulator or glass mechanically jammed causing switch to remain engaged
- Water intrusion/corrosion in switch or connector
- Faulty Body Control Module (BCM) or window control module software/firmware fault
Symptoms
- Right front window appears to be continuously trying to go down or will not respond to inputs
- Right front window switch feels physically stuck or stays depressed
- Right front window will not move up or down, or moves only in one direction
- Intermittent operation of the right front window
- Related fuse may be blown; possible clicking/relay activity from BCM
- Dash or door chime/warning may indicate window fault
What to check
- Retrieve freeze frame and all related body codes with a scan tool; note current state of switch input
- Visually inspect right front door switch for debris, corrosion, or physical sticking
- Operate the right front switch while observing window movement and listening for motor operation
- Check fuses and ground(s) for the power window circuit
- Inspect wiring and connector at the switch for corrosion, bent pins, or water intrusion
- Perform a wiggle test on the switch harness while operating the switch to reproduce the fault
Signal parameters
- Reference input to switch: nominal reference voltage supplied by vehicle (commonly 5 V or battery-derived, varies by model)
- Switch output: should toggle between inactive level and active level when pressed (active = pulled to ground or driven to battery depending on design)
- Continuity across closed switch contacts: low ohms (near 0 Ω) when pressed; open (very high Ω) when released
- When switch is NOT pressed the switch output should NOT show continuous active state
- Motor circuit voltage at regulator: near battery voltage when motor commanded; no constant supply when switch neutral
Diagnostic algorithm
- Connect a scan tool; record B2203 and any related codes, and monitor switch input data and BCM/window module statuses
- Visually inspect the right front switch and door harness for contamination, bent pins, damage, or moisture; repair any obvious damage
- Operate the switch and observe the switch input parameter on the scan tool to confirm the input is stuck in the down position
- With key on, measure reference voltage and switch output at the switch connector using a multimeter; compare with expected behavior (output should change when pressing/releasing)
- If output is continuously active at the switch connector, disconnect the switch and check the circuit again to determine if the wiring is shorted (if active persists, suspect wiring/short to battery or module)
- If output becomes inactive when switch is disconnected, bench-test or replace the switch and retest
- Check for voltage at the window motor/regulator when commanding the window. If the motor sees constant voltage without command, suspect BCM/module fault or short
- Manually inspect and, if necessary, unbolt the door panel to check regulator for mechanical binding; manually move glass to verify it is not jammed
- If wiring and switch check good, check BCM/window module grounds and data bus communications (scan tool for U-codes). Reprogram/replace module only after other causes are ruled out
- Clear codes and perform full functional test of window and switch to confirm repair
Likely causes
- Failed right front window switch (most common)
- Wiring short or corrosion at switch connector
- Mechanically jammed regulator or glass preventing normal switch operation
- Contaminated/shorted switch from water ingress
- Faulty BCM/window module (least common)
Fault status
Status
Stored DTC B2203 — Right Front Window Switch input stuck in DOWN position (continuous activation). Fault logged by body/window control module; input circuit indicates persistent active state.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
Similar codes
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Code
B2203
Other
B — Body
CD-ROM Error
Views:
UK: 19
EN: 28
RU: 16
AI status
Completed
Completed
100%
Causes
- Failed or mechanically stuck right front window switch
- Short to ground or short to battery in the switch wiring
- Open circuit or high resistance in switch harness or connector
- Window regulator or glass mechanically jammed causing switch to remain engaged
- Water intrusion/corrosion in switch or connector
- Faulty Body Control Module (BCM) or window control module software/firmware fault
Symptoms
- Right front window appears to be continuously trying to go down or will not respond to inputs
- Right front window switch feels physically stuck or stays depressed
- Right front window will not move up or down, or moves only in one direction
- Intermittent operation of the right front window
- Related fuse may be blown; possible clicking/relay activity from BCM
- Dash or door chime/warning may indicate window fault
What to check
- Retrieve freeze frame and all related body codes with a scan tool; note current state of switch input
- Visually inspect right front door switch for debris, corrosion, or physical sticking
- Operate the right front switch while observing window movement and listening for motor operation
- Check fuses and ground(s) for the power window circuit
- Inspect wiring and connector at the switch for corrosion, bent pins, or water intrusion
- Perform a wiggle test on the switch harness while operating the switch to reproduce the fault
Signal parameters
- Reference input to switch: nominal reference voltage supplied by vehicle (commonly 5 V or battery-derived, varies by model)
- Switch output: should toggle between inactive level and active level when pressed (active = pulled to ground or driven to battery depending on design)
- Continuity across closed switch contacts: low ohms (near 0 Ω) when pressed; open (very high Ω) when released
- When switch is NOT pressed the switch output should NOT show continuous active state
- Motor circuit voltage at regulator: near battery voltage when motor commanded; no constant supply when switch neutral
Diagnostic algorithm
- Connect a scan tool; record B2203 and any related codes, and monitor switch input data and BCM/window module statuses
- Visually inspect the right front switch and door harness for contamination, bent pins, damage, or moisture; repair any obvious damage
- Operate the switch and observe the switch input parameter on the scan tool to confirm the input is stuck in the down position
- With key on, measure reference voltage and switch output at the switch connector using a multimeter; compare with expected behavior (output should change when pressing/releasing)
- If output is continuously active at the switch connector, disconnect the switch and check the circuit again to determine if the wiring is shorted (if active persists, suspect wiring/short to battery or module)
- If output becomes inactive when switch is disconnected, bench-test or replace the switch and retest
- Check for voltage at the window motor/regulator when commanding the window. If the motor sees constant voltage without command, suspect BCM/module fault or short
- Manually inspect and, if necessary, unbolt the door panel to check regulator for mechanical binding; manually move glass to verify it is not jammed
- If wiring and switch check good, check BCM/window module grounds and data bus communications (scan tool for U-codes). Reprogram/replace module only after other causes are ruled out
- Clear codes and perform full functional test of window and switch to confirm repair
Likely causes
- Failed right front window switch (most common)
- Wiring short or corrosion at switch connector
- Mechanically jammed regulator or glass preventing normal switch operation
- Contaminated/shorted switch from water ingress
- Faulty BCM/window module (least common)
Fault status
Status
Stored DTC B2203 — Right Front Window Switch input stuck in DOWN position (continuous activation). Fault logged by body/window control module; input circuit indicates persistent active state.
Repair difficulty: Medium
Diagnostic time: 0.5-2 hours
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