These ECUs have a poor reliability history. This is almost entirely due to failure of the “tile” – a Thick Film hybrid circuit exclusive to Bosch. Our rebuilder has developed a re-engineered replacement for this vital component.
sold on an exchange basis
A common LH ECU failure is for the fuel pump to fail to run due to the fuel pump relay not being energised by the LH ECU. Often, a regular clicking will be heard in the engine bay as soon as the ignition is switched on.