Emissions Control Module: Removing

2012 Volkswagen Jetta TDI, 4D Sedan, Standard TransSECTION Removing
WARNING: This page is about a different car, the 2015 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

-- Remove the subframe, refer to SUBFRAME .

-- Remove the front exhaust pipe, refer to REMOVINGΒ .

-- Drain the coolant, refer to COOLANT, DRAINING AND FILLING .

-- Remove the left coolant pipes, refer to LEFT COOLANT PIPES .

-- Remove the rear coolant pipe, refer to REAR COOLANT PIPE .

-- Remove the exhaust gas recirculation, refer to REMOVINGΒ .

-- Disconnect and remove the connector for the coolant reservoir -2-.

Fig 1: Identifying Coolant Reservoir, Bolts And Connector
GWWN47-10112Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Unclip the wiring harness from the coolant reservoir.

-- Remove the bolts -3- and the coolant expansion tank -2-.

-- Unclip the lines -1- and free up.

-- Lay the coolant reservoir -2- on the engine.

-- Remove the Exhaust Gas Temperature Sensor 2 -G448-, Exhaust Gas Temperature Sensor 3 -G495- and Exhaust Gas Temperature Sensor 4 -G648-, refer to REMOVINGΒ  and REMOVINGΒ .

-- Remove the Oxygen Sensor 1 before Catalytic Converter -GX10-, refer to OXYGEN SENSOR 1 BEFORE CATALYTIC CONVERTER -GX10- .

-- Remove the Differential Pressure Sensor -G505- and lay on the engine with the lines still attached, refer to DIFFERENTIAL PRESSURE SENSOR -G505- .

-- Remove the Exhaust Pressure Sensor 1 -G450- and lay on the engine with the lines still attached, refer to EXHAUST PRESSURE SENSOR 1 -G450- .

-- Remove the bolt -3-.

Fig 2: Identifying Clamps, Pipes And Bolt
GWWA26-11396Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Loosen the clamps -1- and remove the hoses.

-- Unclip the pipes -2- and remove with the differential pressure sensors.

-- Release and disconnect the Reducing Agent Injector -N474- connector from the bulkhead.

Fig 3: Identifying Clamps And Reducing Agent Line
GWWA26-11525Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Free up the wires.

-- Loosen the hose clamp -1-.

-- Free up the coolant line -3- and the SRC lines -2-.

-- Remove the Reducing Agent Injector -N474- and lay it to the right side.

-- Remove the bolt -arrow-.

Fig 4: Identifying Bolt
GWWN26-10903Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
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.