Skip to content
MotorFiable

PSA/Ford 1.6 HDi, e-HDi, TDCi and BlueHDi (DV6)Urgency: Garage soon

Engine fault warning light (check engine) in the 1.6 HDi engine: causes

In the 1.6 HDi engine, 2 documented faults may be the cause: turbo failure through lack of lubrication (carbon deposits and union filter) and jerking and injection faults on the 1.6 e-HDi 112/115 (Continental injectors).[1]

What to do now

Garage soon

If it stays on steadily, you can drive gently to a garage and ask for a fault code read-out. If it flashes or you notice a loss of power, slow down and get to a garage as soon as possible.

What it means

The orange engine-shaped warning light comes on when the ECU detects a fault affecting combustion or emissions. If it flashes, it usually points to misfires that can damage the catalytic converter.

Engine warning light: causes in all cars

15 sourcesHow we work

Engine faults that cause it

From most to least important. Under each fault, how the symptom shows up. Check the affected years and versions on each page.

  1. Source for the symptom[1]

  2. Source for the symptom[1]

How much it can cost

Depending on the cause, repair at an independent garage ranges from €700[2][3][4][5][6][7][8] (turbo failure through lack of lubrication (carbon deposits and union filter)) to €1,050[2][3][4][5][6][7][8] (turbo failure through lack of lubrication (carbon deposits and union filter)), including VAT.

Most serious fault among the possible causes: High severity

Other common causes: engine warning light

Besides the documented faults of the 1.6 HDi, these are the most common causes on any car according to the sources.

  • Faulty lambda sensor (oxygen sensor)[9][10]Common
  • Dirty or blocked EGR valve[9][11]Common
  • Deteriorated or blocked catalytic converter[9][12][13]Common
  • Spark plugs, coils or ignition leads in poor condition[9][14]Common
  • Faulty injectors[9]Possible
  • Blocked particulate filter[11]Possible

What to check first

  1. Note how the light behaves (steady or flashing; yellow, orange or red) and whether the car loses power, jerks, makes noises or gives off smoke. That decides whether you can carry on or must stop.[9][15]
  2. Check that the fuel filler cap is properly closed: a badly closed cap is one of the causes RACE cites and the easiest to rule out.[9]
  3. Have the codes read through the OBD port at a garage with a diagnostic machine: the error codes point to the part that is failing (sensor, EGR, injectors, ignition, catalytic converter).[9][13][14]
  4. Repair the cause and only then reset the light with the diagnostic machine. If you clear it without repairing, it will come back on.[9]
Complete guide: engine fault warning light (check engine)

Cars with the 1.6 HDi engine

Open yours to see only the faults that affect it according to its years and versions.

See the 49 cars with the 1.6 HDi engine

Frequently asked questions

Engine warning light in the 1.6 HDi: what could it be?

In the 1.6 HDi engine, 2 documented faults may be the cause: turbo failure through lack of lubrication (carbon deposits and union filter) and jerking and injection faults on the 1.6 e-HDi 112/115 (Continental injectors). Each fault has its own page with the affected years and versions, the cause and how to check for it.

Engine warning light in the 1.6 HDi: is it serious?

Urgency: garage soon. If it stays on steadily, you can drive gently to a garage and ask for a fault code read-out. If it flashes or you notice a loss of power, slow down and get to a garage as soon as possible. The most serious fault that causes it on this engine has high severity.

Engine warning light in the 1.6 HDi: how much does it cost to fix?

It depends on the cause: at an independent garage, from €700 (turbo failure through lack of lubrication (carbon deposits and union filter)) to €1,050 (turbo failure through lack of lubrication (carbon deposits and union filter)), including VAT.

Sources

Every fact on this page links to its source. If you find an error, let us know.

  1. Fiabilité Citroën Peugeot. Le bloc 1.6 HDi 8 soupapes est-il fiable ? (1.6 HDi 112/115)L'argus · Motoring press · published 23 March 2015 · consulted 26 September 2026 · in French
  2. Turbo intercambio Garrett 753420 motor 1.6HDi 1.6TDCI 1.6DFG Automoción · Technical documentation · consulted 26 September 2026 · in Spanish
  3. Turbo Garrett 753420 (GT1544V) para 1.6 HDI 110 CVAML Turbos · Technical documentation · consulted 26 September 2026 · in Spanish
  4. Tubo de engrase PSA 1.6 HDI 110 CV + filtro (OP10049COMP)Electromotor Lantejuela · Technical documentation · consulted 26 September 2026 · in Spanish
  5. Häufige Schäden und die professionelle Reparatur (Turbolader PSA 1,6 HDi)Krafthand · Motoring press · published 6 June 2013 · consulted 26 September 2026 · in German
  6. ¿Cuál es el precio de la mano de obra en los talleres de las 10 marcas más vendidas en España?km77 · Motoring press · published 30 December 2024 · consulted 26 September 2026 · in Spanish
  7. La doble tarifa de la mano de obra en los talleres españoles: lo que dice su tablón vs. lo que realmente ingresanInfotaller · Motoring press · published June 2026 · consulted 26 September 2026 · in Spanish
  8. ¿Estás cobrando lo justo en tu taller? Así está la mano de obra por hora en 2025Infotaller · Motoring press · published 9 September 2025 · consulted 26 September 2026 · in Spanish
  9. 7 razones por las que el testigo de fallo del motor se enciende en un cocheRACE · Motoring press · published 23 June 2026 · consulted 2 October 2026 · in Spanish
  10. Sonda lambda o sensor de oxígeno: síntomas y averíasRACE · Motoring press · published 31 October 2023 · consulted 2 October 2026 · in Spanish
  11. Testigo de control de los gases de escapeRACE · Motoring press · published 11 June 2026 · consulted 2 October 2026 · in Spanish
  12. Catalizador de un coche: ¿cómo funciona y qué síntomas de fallo puede dar?RACE · Motoring press · published 8 March 2022 · consulted 2 October 2026 · in Spanish
  13. Código de avería P0420 - guía paso a paso para su diagnóstico y resoluciónAutodoc Club · Technical documentation · consulted 2 October 2026 · in Spanish
  14. Código de avería P0300 - guía paso a paso para su diagnóstico y resoluciónAutodoc Club · Technical documentation · consulted 2 October 2026 · in Spanish
  15. Fallo del motor: guía completa de los símbolos y testigos amarillos en el cocheAutodoc Club · Technical documentation · published 9 September 2026 · consulted 2 October 2026 · in Spanish