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P242D fault code: what it means

P242D: Exhaust gas temperature sensor No.3 circuit high (diesel, at the DPF). Regeneration may be inhibited.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. exhaust gas temperature sensor No.3
  2. open circuit

P242D by make

Mazda

Exhaust gas temperature sensor No.3 circuit high (diesel, at the DPF). Regeneration may be inhibited.

Usual causes: exhaust gas temperature sensor No.3; open circuit

Not sure what P242D means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.