Code Definition

P1372 — No reference pulse while cranking

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Holden

About P1372

P1372 is a manufacturer-specific powertrain diagnostic trouble code recorded for Holden vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1372 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

On these Holden applications P1372 sets when the engine control module receives no reference pulse from the crankshaft position sensor while the engine is cranking. The crankshaft position sensor generates the pulse signal the ECM uses to determine engine speed and crank position, which is essential for timing spark and fuel. Without this reference during cranking the ECM cannot fire the ignition or injectors, so the usual symptom is a crank but no start condition. When the code is set the engine will not start or may cut out, and a check engine lamp will be stored.

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