Code
B1395
ALFA ROMEO
B — Body
Electric door memory locking relay short to ground
AI status
Completed
Completed
100%
Causes
- Relay coil or internal relay shorted to ground
- Damaged, chafed or pinched wiring harness to the relay
- Corroded or shorted relay connector (water ingress)
- Faulty body control module (BCM) driver stage
- Incorrectly installed aftermarket alarm/remote locking device
- Blown or shorted protection fuse or fusible link
Symptoms
- Door memory/central locking operates intermittently or not at all
- One or more doors fail to lock or unlock
- Lock/unlock relay fuse blows repeatedly
- Battery drain when vehicle is parked (parasitic draw)
- Additional body electrical faults or related DTCs present
What to check
- Scan vehicle for stored DTCs and note freeze frame/occurrence conditions
- Visually inspect relay, relay socket and wiring for damage, corrosion or water
- Check fuses and fusible links related to door locks and body control
- With ignition OFF, unplug relay and inspect pins for corrosion or shorting
- Measure resistance between the relay control/supply terminal and chassis ground
- Wiggle harness and operate locks to reproduce intermittent faults
Signal parameters
- Supply voltage to relay: ~12 V nominal with ignition/accessory ON
- Control/driver signal: typically pulled to ground (0 V) or supplied to +12 V depending on vehicle design when activated — check Alfa Romeo wiring diagram
- Expected coil resistance: commonly in the range ~50–200 Ω for 12 V relays (measure actual relay to confirm)
- Activation current: roughly 0.06–0.24 A depending on coil resistance
Diagnostic algorithm
- Read and record all DTCs and freeze-frame data with a diagnostic scanner. Note when the fault occurs (ignition on/off, door movement, remote operation).
- Visually inspect the relay, socket and wiring near doors, hinges and entry points for chafing, water ingress or corrosion. Repair visible damage.
- With ignition OFF, remove the door memory locking relay. Inspect relay pins for corrosion or melted plastic. If relay looks damaged, replace with known-good identical relay and retest.
- Measure resistance between the relay control terminal (in harness) and chassis ground. If near 0 Ω with relay unplugged, there is a short to ground in the harness or module output.
- Measure continuity between the relay supply (battery or switched 12 V) and ground. If shorted, isolate segments of harness (disconnect connectors) to find the short location.
- If wiring checks OK, command the lock/unlock while monitoring the BCM driver pin with a multimeter/oscilloscope (observe safe procedures). Confirm whether the BCM is pulling the line low/high correctly and whether current draw is excessive.
- Swap with a known-good relay (same type) to rule out internal relay failure. If problem disappears, replace relay.
- If harness and relay are good but driver output appears shorted, consider BCM internal failure. Before replacing BCM, confirm with manufacturer diagnostic procedures and check for updated software/calibration.
- After repairs, clear DTCs, perform functional tests (multiple cycles) and road/park test to ensure the fault does not return.
- Document repairs and advise customer if aftermarket devices were found and are causing the issue.
Likely causes
- Shorted relay coil or failed relay internal insulation
- Wiring abrasion where the harness passes through the door hinge or body
- Connector contact corrosion allowing ground bleed
- BCM output transistor failed and is pulling the circuit to ground
- Recent repair or modification disturbed the harness or connector
Fault status
Status
Body control module detected electric door memory locking relay circuit shorted to ground (low resistance to chassis ground).
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Repair manuals
Manual library for ALFA ROMEO
89
Browse 89 ALFA ROMEO manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
ALFA ROMEO
-
ALFA ROMEO: 2024
-
ALFA ROMEO: 2023
-
Stelvio
-
ALFA ROMEO: 2022
-
Stelvio
-
ALFA ROMEO: 2021
-
Stelvio
-
ALFA ROMEO: 2020
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
Code
B1395
FIAT
B — Body
Electric door memory locking relay short to ground
AI status
Completed
Completed
100%
Causes
- Relay coil or internal relay shorted to ground
- Damaged, chafed or pinched wiring harness to the relay
- Corroded or shorted relay connector (water ingress)
- Faulty body control module (BCM) driver stage
- Incorrectly installed aftermarket alarm/remote locking device
- Blown or shorted protection fuse or fusible link
Symptoms
- Door memory/central locking operates intermittently or not at all
- One or more doors fail to lock or unlock
- Lock/unlock relay fuse blows repeatedly
- Battery drain when vehicle is parked (parasitic draw)
- Additional body electrical faults or related DTCs present
What to check
- Scan vehicle for stored DTCs and note freeze frame/occurrence conditions
- Visually inspect relay, relay socket and wiring for damage, corrosion or water
- Check fuses and fusible links related to door locks and body control
- With ignition OFF, unplug relay and inspect pins for corrosion or shorting
- Measure resistance between the relay control/supply terminal and chassis ground
- Wiggle harness and operate locks to reproduce intermittent faults
Signal parameters
- Supply voltage to relay: ~12 V nominal with ignition/accessory ON
- Control/driver signal: typically pulled to ground (0 V) or supplied to +12 V depending on vehicle design when activated — check Alfa Romeo wiring diagram
- Expected coil resistance: commonly in the range ~50–200 Ω for 12 V relays (measure actual relay to confirm)
- Activation current: roughly 0.06–0.24 A depending on coil resistance
Diagnostic algorithm
- Read and record all DTCs and freeze-frame data with a diagnostic scanner. Note when the fault occurs (ignition on/off, door movement, remote operation).
- Visually inspect the relay, socket and wiring near doors, hinges and entry points for chafing, water ingress or corrosion. Repair visible damage.
- With ignition OFF, remove the door memory locking relay. Inspect relay pins for corrosion or melted plastic. If relay looks damaged, replace with known-good identical relay and retest.
- Measure resistance between the relay control terminal (in harness) and chassis ground. If near 0 Ω with relay unplugged, there is a short to ground in the harness or module output.
- Measure continuity between the relay supply (battery or switched 12 V) and ground. If shorted, isolate segments of harness (disconnect connectors) to find the short location.
- If wiring checks OK, command the lock/unlock while monitoring the BCM driver pin with a multimeter/oscilloscope (observe safe procedures). Confirm whether the BCM is pulling the line low/high correctly and whether current draw is excessive.
- Swap with a known-good relay (same type) to rule out internal relay failure. If problem disappears, replace relay.
- If harness and relay are good but driver output appears shorted, consider BCM internal failure. Before replacing BCM, confirm with manufacturer diagnostic procedures and check for updated software/calibration.
- After repairs, clear DTCs, perform functional tests (multiple cycles) and road/park test to ensure the fault does not return.
- Document repairs and advise customer if aftermarket devices were found and are causing the issue.
Likely causes
- Shorted relay coil or failed relay internal insulation
- Wiring abrasion where the harness passes through the door hinge or body
- Connector contact corrosion allowing ground bleed
- BCM output transistor failed and is pulling the circuit to ground
- Recent repair or modification disturbed the harness or connector
Fault status
Status
Body control module detected electric door memory locking relay circuit shorted to ground (low resistance to chassis ground).
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Repair manuals
Manual library for FIAT
26
Browse 26 FIAT manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.
FIAT
-
FIAT: 2022
-
500X
-
-
FIAT: 2021
-
500X
-
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
Code
B1395
OPEL
B — Body
Engine Running Signal Low Voltage
AI status
Completed
Completed
100%
Causes
- Relay coil or internal relay shorted to ground
- Damaged, chafed or pinched wiring harness to the relay
- Corroded or shorted relay connector (water ingress)
- Faulty body control module (BCM) driver stage
- Incorrectly installed aftermarket alarm/remote locking device
- Blown or shorted protection fuse or fusible link
Symptoms
- Door memory/central locking operates intermittently or not at all
- One or more doors fail to lock or unlock
- Lock/unlock relay fuse blows repeatedly
- Battery drain when vehicle is parked (parasitic draw)
- Additional body electrical faults or related DTCs present
What to check
- Scan vehicle for stored DTCs and note freeze frame/occurrence conditions
- Visually inspect relay, relay socket and wiring for damage, corrosion or water
- Check fuses and fusible links related to door locks and body control
- With ignition OFF, unplug relay and inspect pins for corrosion or shorting
- Measure resistance between the relay control/supply terminal and chassis ground
- Wiggle harness and operate locks to reproduce intermittent faults
Signal parameters
- Supply voltage to relay: ~12 V nominal with ignition/accessory ON
- Control/driver signal: typically pulled to ground (0 V) or supplied to +12 V depending on vehicle design when activated — check Alfa Romeo wiring diagram
- Expected coil resistance: commonly in the range ~50–200 Ω for 12 V relays (measure actual relay to confirm)
- Activation current: roughly 0.06–0.24 A depending on coil resistance
Diagnostic algorithm
- Read and record all DTCs and freeze-frame data with a diagnostic scanner. Note when the fault occurs (ignition on/off, door movement, remote operation).
- Visually inspect the relay, socket and wiring near doors, hinges and entry points for chafing, water ingress or corrosion. Repair visible damage.
- With ignition OFF, remove the door memory locking relay. Inspect relay pins for corrosion or melted plastic. If relay looks damaged, replace with known-good identical relay and retest.
- Measure resistance between the relay control terminal (in harness) and chassis ground. If near 0 Ω with relay unplugged, there is a short to ground in the harness or module output.
- Measure continuity between the relay supply (battery or switched 12 V) and ground. If shorted, isolate segments of harness (disconnect connectors) to find the short location.
- If wiring checks OK, command the lock/unlock while monitoring the BCM driver pin with a multimeter/oscilloscope (observe safe procedures). Confirm whether the BCM is pulling the line low/high correctly and whether current draw is excessive.
- Swap with a known-good relay (same type) to rule out internal relay failure. If problem disappears, replace relay.
- If harness and relay are good but driver output appears shorted, consider BCM internal failure. Before replacing BCM, confirm with manufacturer diagnostic procedures and check for updated software/calibration.
- After repairs, clear DTCs, perform functional tests (multiple cycles) and road/park test to ensure the fault does not return.
- Document repairs and advise customer if aftermarket devices were found and are causing the issue.
Likely causes
- Shorted relay coil or failed relay internal insulation
- Wiring abrasion where the harness passes through the door hinge or body
- Connector contact corrosion allowing ground bleed
- BCM output transistor failed and is pulling the circuit to ground
- Recent repair or modification disturbed the harness or connector
Fault status
Status
Body control module detected electric door memory locking relay circuit shorted to ground (low resistance to chassis ground).
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 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
Code
B1395
Other
B — Body
Power Door Memory Lock Relay Circuit Short To Ground
AI status
Completed
Completed
100%
Causes
- Relay coil or internal relay shorted to ground
- Damaged, chafed or pinched wiring harness to the relay
- Corroded or shorted relay connector (water ingress)
- Faulty body control module (BCM) driver stage
- Incorrectly installed aftermarket alarm/remote locking device
- Blown or shorted protection fuse or fusible link
Symptoms
- Door memory/central locking operates intermittently or not at all
- One or more doors fail to lock or unlock
- Lock/unlock relay fuse blows repeatedly
- Battery drain when vehicle is parked (parasitic draw)
- Additional body electrical faults or related DTCs present
What to check
- Scan vehicle for stored DTCs and note freeze frame/occurrence conditions
- Visually inspect relay, relay socket and wiring for damage, corrosion or water
- Check fuses and fusible links related to door locks and body control
- With ignition OFF, unplug relay and inspect pins for corrosion or shorting
- Measure resistance between the relay control/supply terminal and chassis ground
- Wiggle harness and operate locks to reproduce intermittent faults
Signal parameters
- Supply voltage to relay: ~12 V nominal with ignition/accessory ON
- Control/driver signal: typically pulled to ground (0 V) or supplied to +12 V depending on vehicle design when activated — check Alfa Romeo wiring diagram
- Expected coil resistance: commonly in the range ~50–200 Ω for 12 V relays (measure actual relay to confirm)
- Activation current: roughly 0.06–0.24 A depending on coil resistance
Diagnostic algorithm
- Read and record all DTCs and freeze-frame data with a diagnostic scanner. Note when the fault occurs (ignition on/off, door movement, remote operation).
- Visually inspect the relay, socket and wiring near doors, hinges and entry points for chafing, water ingress or corrosion. Repair visible damage.
- With ignition OFF, remove the door memory locking relay. Inspect relay pins for corrosion or melted plastic. If relay looks damaged, replace with known-good identical relay and retest.
- Measure resistance between the relay control terminal (in harness) and chassis ground. If near 0 Ω with relay unplugged, there is a short to ground in the harness or module output.
- Measure continuity between the relay supply (battery or switched 12 V) and ground. If shorted, isolate segments of harness (disconnect connectors) to find the short location.
- If wiring checks OK, command the lock/unlock while monitoring the BCM driver pin with a multimeter/oscilloscope (observe safe procedures). Confirm whether the BCM is pulling the line low/high correctly and whether current draw is excessive.
- Swap with a known-good relay (same type) to rule out internal relay failure. If problem disappears, replace relay.
- If harness and relay are good but driver output appears shorted, consider BCM internal failure. Before replacing BCM, confirm with manufacturer diagnostic procedures and check for updated software/calibration.
- After repairs, clear DTCs, perform functional tests (multiple cycles) and road/park test to ensure the fault does not return.
- Document repairs and advise customer if aftermarket devices were found and are causing the issue.
Likely causes
- Shorted relay coil or failed relay internal insulation
- Wiring abrasion where the harness passes through the door hinge or body
- Connector contact corrosion allowing ground bleed
- BCM output transistor failed and is pulling the circuit to ground
- Recent repair or modification disturbed the harness or connector
Fault status
Status
Body control module detected electric door memory locking relay circuit shorted to ground (low resistance to chassis ground).
Repair difficulty: Medium
Diagnostic time: 1.0-2.5 hours
Similar codes
Repair manuals
Brands with available manuals
7,894
The library contains 7,894 repair and diagnostic manuals. Choose a brand to open the full manual tree by year, model and trim.
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