'03 Dii - Additive Adaptive Mixture Correction Tra

[KevinY]

Hello, my '03 DII is throwing the following engine errors. Does anyone have an idea what would be causing these?

P0172 = MIXTURE ADAPTION FACTOR FRA BANK 1 DRIVE CYCLE C, WHICH HAS OCCURED 46 TIMES (SIGNAL TOO HIGH, THE FAULT IS CURRENTLY NOT PRESENT, THIS AULT CAUSES MIL LAMP ACTIVATION, THE FAULT HAS BEEN DETERMINED AS INTERMITTENT).


P0175 = MIXTURE ADAPTION FACTOR FRA BANK 2 DRIVE CYCLE C, WHICH HAS OCCURED 37 TIMES (SIGNAL TOO HIGH, THE FAULT IS CURRENTLY NOT PRESENT, THIS FAULT CAUSES MIL LAMP ACTIVATION, THE FAULT HAS BEEN DETERMINED AS INTERMITTENT).


P0175 = ADDITIVE ADAPTIVE MIXTURE CORRECTION TRA BANK 2 DRIVE CYCLE B, WHICH HAS OCCURED ONCE (SIGNAL TOO HIGH, THE FAULT IS CURRENTLY PRESENT, THIS FAULT CAUSES MIL LAMP ACTIVATION, THE FAULT HAS BEEN DETERMINED AS PERSISTENTLY PRESENT).


P1000 = ADDITIVE ADAPTIVE MIXTURE CORRECTION TRA BANK 1 DRIVE CYCLE B, WHICH HAS OCCURED ONCE (SIGNAL TOO HIGH, THE FAULT IS CURRENTLY PRESENT, THIS FAULT CAUSES MIL LAMP ACTIVATION, THE FAULT HAS BEEN DETERMINED AS PERSISTENTLY PRESENT).

I do have data logs for the following if they would be helpful:
- Air and fueling
- Oxygen sensors
- Roughness and timing
- Switching and states
- General input

 

[baddmojoii]

Most likely a bad MAF sensor. Make sure that you're airbox is installed correctly.

 

[KevinY]

Thanks - I have attached a data capture file that includes MAF data. Sorry about some of the small font as Excel file cannot be uploaded so I converted to PDF format. The first pages are from the air / fuel data capture and include the MAFS data. What is the baseline data that the MAFS should be operating?


I have replaced the MAF insert recently and hope that this is not the case.

 

[RVRSRVC]

Check for 4th gear monitoring fault in the trans ECU. If present, put in a MAF. If not, consider a smoke test for injector o-rings.

 

[KevinY]

Thanks, unfortunately there were not any faults stored in the trans ECU, but I reset adaptive values while I was there. I will keep working with it.

Are the Motronic maps available for reference against the values I have data logged?