Code
B2301
Generic
B — Body
Seat Passenger Memory Position Error
Views:
UK: 21
EN: 31
RU: 17
AI status
Completed
Completed
100%
Causes
- Faulty seat memory module or seat control module
- Failed seat position sensor (position potentiometer or sensor strip)
- Open, short, or high-resistance wiring or connectors between seat and module
- Blown fuse or loss of power/ground to the seat module
- CAN/LIN communication fault between seat module and vehicle network
- Mechanical obstruction or seized seat motor/track preventing correct position
Symptoms
- Passenger seat fails to move to recalled memory positions
- Inability to store a passenger seat memory position
- Seat moves erratically or stops before reaching expected position
- DTC B2301 logged in memory and may trigger a dashboard message
- Loss of seat memory function after battery disconnect or repair
What to check
- Read DTCs and freeze frame data with a scan tool; note related codes and network errors
- Verify battery voltage during test; check related fuses and relays for seat circuits
- Visually inspect seat wiring harnesses and connectors for damage, corrosion, or pin push-out
- Operate seat manually and via memory switches while watching live data for position sensor values
- Check for mechanical binding in seat tracks and confirm full travel in all directions
- Verify module power, ground, and communication (CAN/LIN) with a multimeter/oscilloscope
Signal parameters
- Seat position sensor voltage (typical 0.5–4.5 V depending on position)
- Reference voltage to sensor (usually +5 V)
- Sensor ground (low resistance to chassis ground)
- Switch input signals from memory buttons (binary/high-low)
- LIN/CAN messages between seat module and body control module (message presence and IDs)
- Seat motor current draw during movement (compare to specification)
Diagnostic algorithm
- Connect a diagnostic scanner, record B2301 and any related codes; review freeze frame and live data while attempting a memory recall.
- Verify battery voltage >12 V and check relevant fuses/relays for the seat memory and seat control circuits.
- Inspect the passenger seat connector and wiring harness for damage; repair any chafing, corrosion, or poor connections.
- Attempt to operate the seat using each manual control and memory recall while observing the seat position sensor output; note if sensor value changes smoothly across full travel.
- Measure sensor reference and ground; if reference missing or erratic, trace back to the seat module or BCM power supply.
- Check communication lines (LIN/CAN) for proper signaling and absence of bus errors; address any network faults before further seat module replacement.
- If motor does not reach expected positions, check motor current draw and for mechanical obstruction; free or repair the track if binding is found.
- Replace or repair the faulty component indicated by tests (sensor, connector, wiring, seat module); after repair, perform any required seat calibration or relearn procedure and clear codes.
- Verify repair by storing and recalling seat positions multiple times and re-scan for related codes.
Likely causes
- Intermittent connector or poor ground at passenger seat module
- Failed seat position sensor producing incorrect or no position signal
- Faulty seat memory module (loss of stored position data or recall function)
- Motor or actuator unable to reach or detect the stored position
- Communication fault on LIN/CAN bus to seat memory module
Fault status
Status
Passenger seat memory position fault stored. Memory recall or store operation failed or position sensor signal out of range.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B2301
Other
B — Body
Seat Passenger Memory Position Error
Views:
UK: 21
EN: 32
RU: 16
AI status
Completed
Completed
100%
Causes
- Faulty seat memory module or seat control module
- Failed seat position sensor (position potentiometer or sensor strip)
- Open, short, or high-resistance wiring or connectors between seat and module
- Blown fuse or loss of power/ground to the seat module
- CAN/LIN communication fault between seat module and vehicle network
- Mechanical obstruction or seized seat motor/track preventing correct position
Symptoms
- Passenger seat fails to move to recalled memory positions
- Inability to store a passenger seat memory position
- Seat moves erratically or stops before reaching expected position
- DTC B2301 logged in memory and may trigger a dashboard message
- Loss of seat memory function after battery disconnect or repair
What to check
- Read DTCs and freeze frame data with a scan tool; note related codes and network errors
- Verify battery voltage during test; check related fuses and relays for seat circuits
- Visually inspect seat wiring harnesses and connectors for damage, corrosion, or pin push-out
- Operate seat manually and via memory switches while watching live data for position sensor values
- Check for mechanical binding in seat tracks and confirm full travel in all directions
- Verify module power, ground, and communication (CAN/LIN) with a multimeter/oscilloscope
Signal parameters
- Seat position sensor voltage (typical 0.5–4.5 V depending on position)
- Reference voltage to sensor (usually +5 V)
- Sensor ground (low resistance to chassis ground)
- Switch input signals from memory buttons (binary/high-low)
- LIN/CAN messages between seat module and body control module (message presence and IDs)
- Seat motor current draw during movement (compare to specification)
Diagnostic algorithm
- Connect a diagnostic scanner, record B2301 and any related codes; review freeze frame and live data while attempting a memory recall.
- Verify battery voltage >12 V and check relevant fuses/relays for the seat memory and seat control circuits.
- Inspect the passenger seat connector and wiring harness for damage; repair any chafing, corrosion, or poor connections.
- Attempt to operate the seat using each manual control and memory recall while observing the seat position sensor output; note if sensor value changes smoothly across full travel.
- Measure sensor reference and ground; if reference missing or erratic, trace back to the seat module or BCM power supply.
- Check communication lines (LIN/CAN) for proper signaling and absence of bus errors; address any network faults before further seat module replacement.
- If motor does not reach expected positions, check motor current draw and for mechanical obstruction; free or repair the track if binding is found.
- Replace or repair the faulty component indicated by tests (sensor, connector, wiring, seat module); after repair, perform any required seat calibration or relearn procedure and clear codes.
- Verify repair by storing and recalling seat positions multiple times and re-scan for related codes.
Likely causes
- Intermittent connector or poor ground at passenger seat module
- Failed seat position sensor producing incorrect or no position signal
- Faulty seat memory module (loss of stored position data or recall function)
- Motor or actuator unable to reach or detect the stored position
- Communication fault on LIN/CAN bus to seat memory module
Fault status
Status
Passenger seat memory position fault stored. Memory recall or store operation failed or position sensor signal out of range.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 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