LR
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EngineMedium severity

Td5 low power or limp mode

Will get worse if left.

Symptoms

Sudden loss of power under load, often at higher boost. Clearing the fault after turning off restores power temporarily.

Likely cause

Split intercooler or turbo hoses, a dirty MAP/IAT sensor, a faulty wastegate, sticking EGR or a failing fuel pressure regulator.

Suggested fixes

Listed roughly in the order most owners try them.

  1. 1

    Inspect boost hoses and intercooler

    Check all boost hoses for splits and oil, and pressure test the intercooler.

    Difficulty:
    Easy DIY
    Cost:
    £ (Under about £50 in parts)
  2. 2

    Clean the MAP/IAT sensor

    Remove the sensor from the intake and clean it with electrical contact cleaner.

    Difficulty:
    Easy DIY
    Cost:
    £ (Under about £50 in parts)
  3. 3

    Read and clear codes with a diagnostic tool

    A Td5 specific diagnostic tool will show the stored fault and live data.

    Difficulty:
    Easy DIY
    Cost:
    £ (Under about £50 in parts)
  4. 4

    Service the EGR valve

    Clean a sticking EGR valve. Note that removing or blanking EGR may affect MOT emissions and is not road legal in the UK.

    Difficulty:
    Moderate DIY
    Cost:
    £ (Under about £50 in parts)

This is general guidance gathered from owner experience and workshop practice, not a substitute for a workshop manual or a qualified mechanic. Costs are rough parts-only guides. Brakes, steering and suspension work affects safety, so if in doubt have it checked professionally.

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