Code
B1310
ALFA ROMEO
B — Body
Door opening circuit
Views:
UK: 23
EN: 29
RU: 28
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1310
FIAT
B — Body
Door opening circuit
Views:
UK: 14
EN: 24
RU: 23
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1310
HUMMER
B — Body
Ambient Air Temperature Sensor Failure
Views:
UK: 23
EN: 30
RU: 30
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1310
LAND ROVER
B — Body
Power supply door unlock - circuit failure
Views:
UK: 17
EN: 26
RU: 27
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1310
MERCEDES-BENZ
B — Body
Left/Window airbag sensor is defective
Views:
UK: 17
EN: 33
RU: 29
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1310
MITSUBISHI
B — Body
Timeout error (TN latch open)
Views:
UK: 19
EN: 30
RU: 25
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
B1310
Other
B — Body
Power Door Unlock Circuit Failure
Views:
UK: 26
EN: 36
RU: 32
AI status
Completed
Completed
100%
Causes
- Broken or damaged wiring in door harness (open/short to power or ground)
- Corroded, loose or damaged connector at door jamb or BCM
- Faulty door ajar / door switch or door latch sensor (mechanical or electrical failure)
- Faulty door actuator or latch assembly
- Poor ground connection at body or module
- Faulty Body Control Module (BCM) or related module
Symptoms
- Door ajar warning lamp or message illuminated incorrectly
- Interior dome light stays on or does not behave correctly with doors
- Central locking may not lock/unlock correctly for that door
- Alarm may trigger erroneously or fail to arm/disarm
- Battery drain if circuit is stuck indicating open door
- Intermittent operation—problem may occur when door is moved or after moisture exposure
What to check
- Scan vehicle with compatible diagnostic tool; record B1310 and freeze frame/related codes
- Visually inspect wiring in door hinge area and door jamb for abrasion, pinching or kinks
- Inspect connectors at door latch, door jamb and BCM for corrosion, bent pins, water ingress or loose terminals
- Check for presence of aftermarket wiring (alarms, speakers) that may interfere
- With ignition on, measure voltage at the door switch/latch connector; operate door while observing changes
- Perform continuity and resistance checks between door switch/latch pins and BCM connector with connector unplugged
Signal parameters
- Typical 12 V body circuit: closed switch ~0–1 V (grounded) or near 12 V depending on vehicle wiring; open switch ~12 V or open circuit — consult vehicle wiring diagram
- Door switch closed resistance: near 0 Ω (continuity). Open: OL or >10 kΩ
- Signal line idle/known state should be stable; intermittent pulses or floating values indicate wiring fault
- Actuator motor draw when operated: small momentary current spike (hundreds of mA to a few amps) — large or no current suggests motor or supply/ground issue
Diagnostic algorithm
- Connect a diagnostic scanner and confirm B1310 plus any related codes (note occurrence counts and freeze frame).
- Check battery voltage; low supply can cause false faults. Recharge or charge if low.
- Visually inspect door harness from hinge to latch; look for chafed wiring and damaged insulation. Repair if found.
- Disconnect the door latch/sensor connector. Inspect pins for corrosion or damage; clean or replace connector as needed.
- With connector disconnected, test switch/latch continuity by actuating latch: closed = continuity, open = no continuity. Compare to specification.
- Backprobe the door signal wire at the latch connector with a multimeter while operating the door to confirm expected voltages and switching behavior.
- Check continuity from the door signal/ground wires back to the BCM connector. Repair any open/shorts.
- If wiring and switch test good, test/replace the door latch sensor or actuator; if still present, consider replacing latch assembly.
- If replacement parts do not clear the fault, test BCM inputs and grounds; repair or replace BCM only after verifying wiring and sensors.
- After repairs, clear codes, cycle power and re-scan; verify fault does not return during normal door operation and short driving/usage cycle.
Likely causes
- Wiring harness damaged by door movement (pinched or chafed near hinge)
- Corroded multi-pin connector at door jamb or latch
- Door latch microswitch failed or stuck
- Intermittent connector making/breaking signal when door is moved
Fault status
Status
Stored by Body Control Module: door-open circuit fault detected. Fault may be active (present) or historical (intermittent). Further testing required to determine wiring, sensor or module cause.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Similar codes
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