Ignition coil primary current of cylinder 1 is too low. (P0351)

Ignition coil primary current of cylinder 1 is too low. (P0351)
Ignition coil primary current of cylinder 1 is too low. (P0351)
Possible cause:
­ Primary current
Affected functions:
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Engine running
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Test 1: Check component T1/x (ignition coil(s)).
1. Check component T1/x (ignition coil(s)).
Test 1.1: Check component T1/1 (ignition coil cylinder 1).
1.1. Check component T1/1 (ignition coil cylinder 1).
Warning!Hazard as a result of high voltage at the ignition system!
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Electronic ignition systems operate within a hazardous power range both at the low voltage side (primary circuit) as well as on the
high voltage side (secondary circuit).
­ Contacts with such parts can result in burns, heart flutter or cardiac arrest.
Rules of conduct and protective measures
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Persons with heart pacemakers must not perform any work on the ignition system.
Switch off the ignition when performing work on the ignition system.
Do not touch any parts of the ignition system when starting the engine or when the engine is running.
Wear protective shoes with rubber soles.
Do not install any uninsulated adapters into the ignition cables.
1.1. No further information available.