I recently installed my Zeitronix unit including the wideband o2 sensor and the LCD monitor. The install was easy and has been running for about 2-3 weeks now. Just recently I ordered the Boost MAP sensor and the ZAVT-1 alarm. I installed the Boost sensor first and went for a drive, everything ran just the way it did before. Then I began to install the ZAVT-1 alarm, this is when everything went wrong.

I tried to start the car after finishing the wiring for the ZAVT-1 and it could barely idle and eventually shut off. I threw several engine codes including:

DTC P0118: Engine Coolant Temperature Circuit High Input
DTC P0123: Throttle Position Circuit High Input

I then removed the Boost sensor, ZAVT and even unplugged the Zeitronix but the car still runs terrible. Now I can't drive the car anywhere and i've got no idea why I threw these codes. It's weird because I didn't touch anything in the engine bay and I have no idea what these codes even mean. If anyone has any experience with these codes or knows how to resolve this issue I really could use the help. Thanks.

 

Did you program the alarm? nvm you removed it.
Did you unplug the maf? What pressure are you reading on the boost gauge at idle.

 

No I didn't touch the MAF at all.

Idle is between -7 to -4.

I also just checked and theres another code in there now:

DTC P0132: Heated Oxygen Sensor Circuit High Voltage [SENSOR]

 

I have the ZT-2 with the boost and alarm. Never had issues that you are describing. I don't see how the boost or the alarm could cause these codes. I would check your ecu connections to ensure that they are secure and that there isn't an electrical ground on your wires that shouldn't have them.

 

Almost 100 views, anyone?

 

^ try Pming Scott or calling him maybe he can help since he is the main ZT vendor

 

Where did you tap for the wiring? Was it at the ECU? If you have loose connections/wires crossed/wires touching it will throw codes. Maybe try going back over all the wiring and make sure its right.

 

Most likely you have accidentally crossed or disconnected some wires at the ecu. Please review your wiring installation to make sure it is correct and that there are not any other damaged wires.

 

Definitely sounds like one of the ECU connectors isn't seated properly, most of the sensors your describing having an issue all share the same connector.

 

Without any pics or descriptions of connections to pins it will be hard to determine. Sounds like Jack is pointing you in the right direction. My vote goes to an improper connection / ground.