B0224

Code

Generic B — Body

Passenger Door Lock Actuator Circuit Malfunction

Brand: Generic

Type: B — Body

Views: UK: 3 EN: 3 RU: 6

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Page language: EN

Causes

Broken or damaged wiring between door and body control module
Corroded or loose connector at the door harness or actuator
Failed door lock actuator (motor, gears, or internal switch)
Short to battery or ground in the actuator circuit
Faulty passenger door latch or mechanical binding preventing actuator movement
Faulty lock/unlock switch or remote keyless entry transmitter issues

Symptoms

Passenger door will not lock or unlock with switch or remote
Intermittent door lock operation on passenger door
Unusual grinding or repetitive clicking sounds from passenger door when commanding locks
Other doors operate normally while passenger door fails
Security/anti-theft or keyless entry faults related to passenger door
Fuse(s) for door locks blowing or tripping

What to check

Visually inspect passenger door wiring harness, especially at hinge/boot and connector, for chafing, corrosion, or damage
Check fuses and relays for the door lock circuit
Use a scan tool to read DTCs and monitor door lock command and module status
Command passenger door lock/unlock while listening for actuator noise; note if any movement or sounds occur
Inspect connector terminals at actuator and BCM for corrosion, bent pins, or looseness
Measure voltage and ground at actuator connector while commanding lock/unlock

Signal parameters

Expected command signal: switched 0–12 V (or pulsed) to actuator when commanded lock/unlock
Typical actuator coil resistance: approximately 5–50 Ω (varies by design) — compare to service spec
Expected supply voltage at actuator when commanded: battery voltage (~11–14 V) under load
Stall/current draw when operating: typically 0.5–5 A depending on actuator — excessive current may indicate binding or short
No-voltage (open) condition: near 0 V at command pin when inactive and no continuity to supply

Diagnostic algorithm

Safety first: place ignition in required position and secure vehicle (parking brake).
Read and record DTC(s) with a scan tool; clear codes and attempt to reproduce to confirm active condition.
Visually inspect passenger door area: harness through door boot, actuator connector, and latch for corrosion, damage or water ingress.
Check fuses/relays related to door locks; replace if blown and retest.
With connector connected, command lock/unlock and backprobe actuator connector: measure voltage on command/supply wires and ground reference while operating. Note presence/absence of voltage and polarity changes.
If no command voltage at actuator, check upstream: test passenger door lock/unlock switch input and continuity to BCM, and monitor BCM output with scan tool or lab scope while commanding locks.
If command voltage present but actuator does not move, disconnect actuator and bench-test by applying 12 V directly (reverse polarity for opposite direction). If actuator fails, replace actuator.
If actuator draws excessive current when bench-tested, or exhibits noisy/erratic operation, replace it. If current is excessively high with actuator disconnected, inspect wiring for short to ground.
If wiring is open or shorted, repair harness, replace damaged connector pins, and protect routing through door boot.
After repairs, clear DTCs, function-test lock/unlock via switch and remote, and drive-cycle or exercise the locks to ensure fault does not return.
If suspect BCM/door module driver failure after wiring and actuator checks, confirm with module bench tests or replacement per OEM procedures and reprogram if required.

Likely causes

Failed/passenger door lock actuator (most common)
Broken or corroded connector/wiring in the door harness (pinch point at hinge)
Open or shorted wiring to BCM or body module output
BCM/door module output driver failure

Fault status

⚠️ Status

Code B0224 is set when the body/door module detects abnormal voltage, open, short, or excessive current on the passenger door lock actuator circuit during a lock/unlock command. The fault may be stored as active (current) or pending/intermittent depending on conditions and usually requires inspection of the actuator, harness, and module outputs.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours