TorqFix

C3 - DV6TED4: Additive tank renewal — CITROEN

C3 - DV6TED4: Additive tank renewal on Citroen: 71 steps, engines DV6TED4(9HZ). What to remove, in what order, and what to check after.

Workshop procedure for CITROEN — the exact step sequence and torque figures, straight from real workshop data.

71 steps 1 engine code

🧭 Before you start

Fits: platform codes 1.6, HDIF, 16V

  • Renewed: additive reservoir note

Don't miss

  • Caution! The temperature of the engine and exhaust will increase significantly
  • Caution! Note the additive hazard warnings
  • Caution! Do not damage the flexible pipe
  • Do not re-use the drained fluid or fluid from opened containers
  • The flexible reservoir must fit flush with the additive tank housing

🔧 Engine codes this applies to

📋 Procedure

Preparation and removal

  1. Caution! The temperature of the engine and exhaust will increase significantly
  2. Caution! Note the additive hazard warnings
  3. Check the tightness of the turbocharger hoses
  4. Select the highest suspension position
  5. Disconnect the mounting clips
DV6TED4(9HZ)? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Start the engine
  2. Connect the diagnostic tool
  3. Remove the bolts shown
  4. Disconnect the pipe(s)
  5. Activate the diesel particulate filter regeneration function
  6. Move the heat shield
  7. Caution! Do not damage the flexible pipe
  8. Disconnect the pipe
  9. Engine running at idle speed
  10. Exhaust clamp:

Installation and checks

  1. Tighten the clamp(s)
  2. Note: Do not re-use the drained fluid or fluid from opened containers
  3. Renew the additive reservoir
  4. Note: The flexible reservoir must fit flush with the additive tank housing
  5. Refit the additive tank
  6. Installation is in the reverse order of removal
  7. Run the engine at idle speed
  8. Use the diagnostic tool
  9. Reprogram the additive pump

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.