Code 34. Detonation or knock sensor circuit problem. This code will revert the ECU to the conservative safety timing and fuel mappings as well as cut the boost on a TT still utilizing the stock safety boost solenoids. We find that this code is almost always triggered by broken wires and/or corrosion on this small sub harness rather than a problem with the sensor itself. Its really only practical to replace it with the engine out of the car, and we usually recommend doing so. If your engine is still in we often just jump the plug in the EFI harness with a 1 mega-ohm resistor to trick the ECU into thinking everything is normal. This does elimate the saftey feature of the detonation sensor system so we recommend fixing the problem right whenever possible, like any engine pull.

Fits:

• 1990-1996 Nissan 300ZX (Z32)

Z1 sells new detonation sensors HERE, and an Upgraded Knock Sensor Harness here for a lot less cost than the new Nissan Harness.