Cat Lift Trucks (& Caterpillar) ET4000:
Cat ET4000AC error code APP-A

Hi, i need help on this one. After replacing the left drive card and the main power card, the lift won't move, but the code APP-A appeared on the display. The last A is flashing. Anyone's knows what I have to do to make the lift work?

Thank
  • Posted 14 Aug 2019 20:53
  • Discussion started by FrankM59
  • Quebec, Canada
Frank M
Technicien

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Global Industry News
edition #1234 - 12 June 2025
As a journalist focussed on the materials handling sector, it is difficult not to notice the regularity of news stories that detail injuries to – or worse still the deaths of – forklift operators... Continue reading
Fact of the week
The Michelin Guide with its star rating system originated in France in 1900. The guide was created as a marketing tool to encourage more car travel and consequently increase the demand for tyres. It initially contained maps, tire repair instructions, and lists of restaurants, hotels, and mechanics.