P1300 BMW Igniter Circuit Malfunction No. 1
Possible causes
– Ignition Coil No. 1 harness is open or shorted
– Ignition Coil No. 1 circuit poor electrical connection
– Faulty Ignition Coil No. 1
– Faulty Engine Control Module (ECM)
– Ignition Coil No. 1 circuit poor electrical connection
– Faulty Ignition Coil No. 1
– Faulty Engine Control Module (ECM)
What about the obd code?
The P1300 BMW code is for the ignition coil No.1 and is set when there is no IGF signal to the ECM during engine operation.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1300 BMW Description
Direct Ignition System (DIS) is a 1-cylinder ignition system that ignites one cylinder with one ignition coil. Ignitor is integral to ignition coil. The Engine Control Module (ECM) determines ignition timing and outputs a ignition signal (IGT) for each cylinder. Based on the IGT signals, power transistors in the ignitor cut of current to primary coil in ignition coil, causing ignition coil to fire spark plug. After delivering a command to turn off primary circuit on the IGT wire, ECM monitors IGF circuit to ensure primary switching occurred.
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