P1320 — Buick — IC Module 4X Ref Circuit Intermittent, No Pulses

P1320 (Buick): IC Module 4X Ref Circuit Intermittent, No Pulses — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

IC Module 4X Ref Circuit Intermittent, No Pulses. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain