Staff Answer
Jun 25, 2026 - 01:39 PM
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The P219E code indicates that the Engine Control Module (ECM) has detected an inconsistent air-fuel mixture specifically in Cylinder 2.
Two Methods for Resolution:
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Method 1: Perform an Ignition "Swap Test": To isolate whether the issue is caused by a weak spark, swap the ignition coil from Cylinder 2 with one from a different cylinder. Clear the error codes and test drive. If the code moves to the new cylinder (e.g., changes to a P219F or similar), the ignition coil is faulty and requires replacement. During this process, inspect the spark plug in Cylinder 2 for heavy carbon deposits or improper electrode gap.
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Method 2: Inspect and Clean the Fuel Injector: A restricted fuel injector in Cylinder 2 is a primary cause for this imbalance. Start by using a high-quality, professional-grade fuel system cleaner designed for direct-injection systems. If the code persists, the injector may have an internal clog or poor spray pattern; consider having it professionally flow-tested or replaced to ensure it matches the output of the other injectors.
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