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Home›Repair guides›MTU›NOx sensor - Replacement

MTU 12V 1600 R50 — NOx sensor - Replacement

Repair & overhaul

For the MTU 12V 1600 R50, from the MTU operator's manual.

Applies to: MTU 12V1600R50 engine

Before you start

  • Component is hot; risk of burning
  • High voltage; switch off ignition before replacing components

Procedure

  1. Switch off ignition.
  2. Unplug and remove male connector on control unit.
  3. Remove sensor and remove control unit.
  4. Install control unit.
  5. Remove protective cap on thread just before installation.
  6. Coat sensor thread with assembly compound (Molykote P 37).
  7. Screw in sensor by hand; tighten nut M20x1.5 to 50 Nm +/-10 Nm.
  8. Fit male connector and latch it.

Tools required

  • Torque wrench 10-60 Nm F30510423 Amazon
  • Ratchet F30027340 Amazon
  • Assembly compound Molykote P 37 (50564) Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Nut M20x1.5 50 Nm +/-10 Nm
  • Always replace NOx sensor together with control unit

Source: MTU operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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