Engine-Codes - Cadillac - B153B CADILLAC

B153B CADILLAC - Liftgate Open Switch Signal Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?

B153B CADILLAC Possible Causes

  • Faulty Liftgate Motor Assembly
  • Liftgate Motor Assembly harness is open or shorted
  • Liftgate Motor Assembly circuit poor electrical connection
  • Faulty Liftgate Control Module (LGM)

How do I fix code B153B CADILLAC

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

B153B 02 Liftgate Open Switch Signal Circuit Short to Ground
B153B 05 Liftgate Open Switch Signal Circuit Open

Cost of diagnosing the B153B CADILLAC code

Labor: 1.0

The cost of diagnosing the B153B CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B153B CADILLAC Meaning

The full open switch is part of the gear motor assembly and will close and become active when the liftgate reaches the full open position. The full open switch signal circuit is supplied battery voltage through a resistor and monitored within the Liftgate Control Module (LGM). The Liftgate Control Module provides a low reference circuit and when the switch contacts close, the signal circuit goes low and the LGM determines the switch to be active.

B153B CADILLAC More Information

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