P1434 Code: Easy Steps to Solve It
The P1434 trouble code is a diagnostic trouble code (DTC) that indicates an issue with the additive pump in vehicles equipped with a diesel particulate filter (DPF) system. This code is particularly common in vehicles using the Eolys additive, which is essential for the proper functioning of the DPF. When this code appears, it signifies that the engine control unit (ECU) has detected a fault