B1D58

Code

Generic B — Body

BCM Sensor 58 Circuit Fault

Brand: Generic

Type: B — Body

Views: UK: 12 EN: 13 RU: 13

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Related system or feature controlled by sensor 58 may not operate or behaves erratically
BCM or dash warning lamp(s) illuminated
Stored fault codes related to the same system or CAN communication
Intermittent operation of affected functions
Possible battery drain if circuit is shorted to power

Read freeze frame and all stored codes with a capable scan tool; note when code set
Check for other related DTCs that point to sensor function or power/ground issues
Visually inspect wiring, grommets and connectors along harness to the sensor and BCM
Wiggle test wiring while monitoring live data or DTC status
Check sensor power supply and ground circuits for correct voltages
Measure signal at sensor and at BCM pin (with harness connected) while operating the circuit if safe

Typical sensor input: analog 0–5 V (0–12 V on some systems) or switched-to-ground (0 V/vehicle battery voltage). Verify service data for exact type
Expected open-circuit resistance: sensor-specific (often hundreds to thousands of ohms for resistive sensors; near 0 ohms for switched ground)
No signal or constant rail voltage indicates open or short-to-power; 0 V constant may indicate short-to-ground
Signal should change predictably with sensor actuation; look for noise or intermittent spikes on scope

Connect a diagnostic scan tool. Record DTCs, freeze frame and live data for sensor 58. Clear codes and attempt to reproduce.
Inspect the sensor and harness for obvious damage, corrosion, pin push-out, or water ingress. Repair as needed.
Perform a wiggle test on the harness and connectors while monitoring the DTC and live data to see if fault is intermittent.
Verify sensor power and ground at the connector with a DVOM; compare to vehicle battery voltage and chassis ground reference.
Backprobe the sensor signal wire and measure voltage (or frequency) while activating/operating the sensor. Compare to expected values.
Measure continuity/resistance between the sensor signal pin and the BCM signal pin with ignition off to check for opens or shorts. Also check for short to ground/power.
If wiring checks out, swap or bench-test the sensor (if serviceable) or replace with a known-good unit and re-test.
If new sensor and wiring are good but fault persists, inspect BCM connector pins for damage and check other BCM inputs for similar faults.
As a last resort, consult manufacturer technical service bulletins and consider BCM reflash or replacement following verified root cause.
After repairs, clear codes and road/test to confirm fault does not return.