P2413: Volkswagen CJAA EGR and fuel-adaptation limits

P2413 is the EGR-system and fuel-mean-value adaptation entry in Volkswagen's 2014 CJAA chart. The detailed monitor concerns learned fuel-mass corrections reaching their limits.

The count of learned points matters

Volkswagen lists at least four learning points at an adaptation limit. The upper and lower limits are respectively positive and negative 6 milligrams per stroke. Those values describe adaptation boundaries, not the engine's total injected fuel quantity or a universal injector-flow specification.

The multiple-point condition is useful because one isolated correction value does not represent the complete monitor. The source evaluates how the learned correction behaves across enough points to meet its count criterion.

Broader than a simple EGR valve circuit code

The generic title “EGR performance” can hide this fuel-adaptation context. The row does not directly identify a shorted EGR actuator, a stuck valve or a failed injector. Those conclusions require evidence from the appropriate circuit and performance tests.

Professional diagnosis should retain the adaptation information and the CJAA operating context before considering resets or parts replacement. The quick-reference chart does not provide a learning-reset procedure, a cause ranking or instructions to modify fueling. It supports an explanation of the adaptation-limit result while leaving the underlying air/fuel-control cause to further testing.

Source: Volkswagen manufacturer diagnostic chart, physical PDF page 42; physical PDF page 55.