Test Data And Spark Plugs

2012 Volkswagen Jetta TDI, 4D Sedan, Standard TransSECTION Test Data And Spark Plugs
WARNING: This page is about a different car, the 2013 Volkswagen Beetle and 2012 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.
Engine Codes CCTA and CBFA
Ignition sequence 1-3-4-2
Spark plugs (1) -
  • Volkswagen type
101 905 631 H
  • Electrode gap
1.0 to 1.1 mm
  • Tightening specification
25 Nm
  • Observe change interval
Refer to the Maintenance Intervals
(1) : Remove and install using the spark plug removal tool3122 B
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.