PRA ECU - USE SECONDARY O2 INPUT FOR CLOSED LOOP OPERATION

carbonctr · Post by **carbonctr** » Mon Jun 30, 2008 2:07 am

I have replaced my primary O2 sensor with the Innovate LC-1 which is not working correctly just now. (The narrowband output simulates the stock primary sensor and the wideband for datalogging). As I am trying to diagnose the problem I have had to force my car into open loop so it runs correctly.
I noticed the tickbox next to "Use secondary O2 input for closed loop operation" under KManager Parameters Closed Loop tab. When I tick this, as soon as the car attempts closed loop the MIL illuminates and fuel status is OPEN-ERROR, but there is no error code in KManager. I have tried with "Disable P0135 (O2 heater)" ticked and unticked. Emissions error checking is disabled.
How can I get this to work so I do not have to move the LC-1 to the secondary location and reinstall the stock primary O2 sensor?

Post by **Spunkster** » Mon Jun 30, 2008 9:44 am

The "use secondary o2 input" is only for use with the K-Pro for the S2000.

Since we do not have this vehicle in the US we do not have the specific details to answer your questions. Have you tried contacting the European dealers?

I would recommend just using the stock primary sensor to run closed loop and then input the wideband signal into the ELD.

carbonctr · Post by **carbonctr** » Mon Jun 30, 2008 2:36 pm

Spunkster wrote:The "use secondary o2 input" is only for use with the K-Pro for the S2000.

Since we do not have this vehicle in the US we do not have the specific details to answer your questions. Have you tried contacting the European dealers?

I would recommend just using the stock primary sensor to run closed loop and then input the wideband signal into the ELD.

I have contacted one UK dealer but they use the US ECU with US wideband so don't have experience with the PRA and wideband.

I'm going to reinstall the stock primary sensor tomorrow. I'll put the LC-1 in the secondary location and use it for datalogging only.