Code
B2241
HUMMER
B — Body
Memory 2 Switch Failed
AI status
Completed
Completed
100%
Causes
- Faulty Memory 2 switch (mechanical or internal electrical failure)
- Open or short in the switch wiring harness or broken conductor
- Poor or corroded connector at the switch or module
- Failed/incorrectly programmed Body Control Module (BCM) or seat/memory module
- Blown fuse or poor power/ground to the circuit
- Intermittent wiring fault (chafing, pinched harness)
Symptoms
- Memory position #2 will not set or recall
- Pressing the Memory 2 button has no effect or inconsistent operation
- Related memory-controlled systems (seat, mirrors, steering column) may not move for position 2
- DTC B2241 stored in BCM and possible instrument cluster warning or message
- Other memory positions (1, 3) may continue to function normally if their circuits are OK
What to check
- Use a scan tool to read DTCs and freeze frame data; note any related codes
- Attempt to operate Memory 2 while monitoring live data/inputs for the memory switch
- Visually inspect the Memory 2 switch, connector, and wiring for damage, corrosion, or loose pins
- Verify fuses and power/ground at the BCM and seat/memory module
- Wiggle the wiring harness and connector while observing live data for intermittent changes
- Compare behavior of Memory 2 switch to Memory 1/3 (if equipped) to isolate switch vs module
Signal parameters
- Memory switch is a digital input to the BCM/module: normally shows a quiescent pull-up voltage (to module supply or reference) and changes state when the switch is pressed
- Typical inactive reading: pull-up voltage (depends on design — commonly ~5 V or module supply voltage)
- Typical active reading: driven to ground or to supply depending on circuit design (reading will change from quiescent value when button pressed)
- Low current, low-voltage digital signal; verify with DMM or lab scope while operating the switch
Diagnostic algorithm
- Read and record all diagnostic trouble codes and freeze frame data with a capable scan tool. Clear the code and attempt to reproduce; note if code returns.
- Verify other memory inputs (Memory 1/3) to determine if fault is isolated to switch #2 or a module/general fault.
- Perform a visual inspection of the Memory 2 switch, harness, and connector for damage, corrosion, loose terminals, or water intrusion.
- With connector disconnected, check for proper power and ground at the module/BCM connectors that supply/reference the memory switches. Verify fuse continuity.
- Backprobe the switch signal wire and monitor voltage while pressing the Memory 2 switch. Confirm the signal changes state (matches signal_params).
- If signal does not change, test continuity between the switch and the BCM/module. Repair any open/shorts found.
- If the switch wiring and connectors are good but signal still incorrect, bench-test or replace the Memory 2 switch assembly.
- If switch replacement does not clear the code, investigate the BCM/memory module for input circuit faults and consider module reprogramming or replacement per manufacturer procedures.
- After repairs, clear codes and verify proper operation of Memory 2 through multiple cycles; inspect for intermittent faults.
- Document repairs and recheck for related codes and functionality.
Likely causes
- Failed Memory 2 switch (most common)
- Broken/open wiring or connector to the switch
- Corroded connector or poor ground at switch/module
Fault status
Status
Memory 2 switch circuit fault — switch failed or communication with memory input is invalid. Repair wiring/connectors or replace switch/module as required.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
Manual library for HUMMER
138
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Code
B2241
Other
B — Body
Rear Cargo Door Lock Circuit Short to Ground
AI status
Completed
Completed
100%
Causes
- Faulty Memory 2 switch (mechanical or internal electrical failure)
- Open or short in the switch wiring harness or broken conductor
- Poor or corroded connector at the switch or module
- Failed/incorrectly programmed Body Control Module (BCM) or seat/memory module
- Blown fuse or poor power/ground to the circuit
- Intermittent wiring fault (chafing, pinched harness)
Symptoms
- Memory position #2 will not set or recall
- Pressing the Memory 2 button has no effect or inconsistent operation
- Related memory-controlled systems (seat, mirrors, steering column) may not move for position 2
- DTC B2241 stored in BCM and possible instrument cluster warning or message
- Other memory positions (1, 3) may continue to function normally if their circuits are OK
What to check
- Use a scan tool to read DTCs and freeze frame data; note any related codes
- Attempt to operate Memory 2 while monitoring live data/inputs for the memory switch
- Visually inspect the Memory 2 switch, connector, and wiring for damage, corrosion, or loose pins
- Verify fuses and power/ground at the BCM and seat/memory module
- Wiggle the wiring harness and connector while observing live data for intermittent changes
- Compare behavior of Memory 2 switch to Memory 1/3 (if equipped) to isolate switch vs module
Signal parameters
- Memory switch is a digital input to the BCM/module: normally shows a quiescent pull-up voltage (to module supply or reference) and changes state when the switch is pressed
- Typical inactive reading: pull-up voltage (depends on design — commonly ~5 V or module supply voltage)
- Typical active reading: driven to ground or to supply depending on circuit design (reading will change from quiescent value when button pressed)
- Low current, low-voltage digital signal; verify with DMM or lab scope while operating the switch
Diagnostic algorithm
- Read and record all diagnostic trouble codes and freeze frame data with a capable scan tool. Clear the code and attempt to reproduce; note if code returns.
- Verify other memory inputs (Memory 1/3) to determine if fault is isolated to switch #2 or a module/general fault.
- Perform a visual inspection of the Memory 2 switch, harness, and connector for damage, corrosion, loose terminals, or water intrusion.
- With connector disconnected, check for proper power and ground at the module/BCM connectors that supply/reference the memory switches. Verify fuse continuity.
- Backprobe the switch signal wire and monitor voltage while pressing the Memory 2 switch. Confirm the signal changes state (matches signal_params).
- If signal does not change, test continuity between the switch and the BCM/module. Repair any open/shorts found.
- If the switch wiring and connectors are good but signal still incorrect, bench-test or replace the Memory 2 switch assembly.
- If switch replacement does not clear the code, investigate the BCM/memory module for input circuit faults and consider module reprogramming or replacement per manufacturer procedures.
- After repairs, clear codes and verify proper operation of Memory 2 through multiple cycles; inspect for intermittent faults.
- Document repairs and recheck for related codes and functionality.
Likely causes
- Failed Memory 2 switch (most common)
- Broken/open wiring or connector to the switch
- Corroded connector or poor ground at switch/module
Fault status
Status
Memory 2 switch circuit fault — switch failed or communication with memory input is invalid. Repair wiring/connectors or replace switch/module as required.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
Repair manuals
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