Multiple Pcodes 1133 1126 2177 2187 2179 Where to start?

[sobefun]

2006 Cayman S with 56k miles and Fabspeed exhaust with sport cats.

 

Took the car out for a morning ride and the CEL came on.  Brought it home and pulled the codes.  Now the car will start, but rough idle and then shut off within a few seconds. With the multiple codes, I am looking for advice on where to begin in the diagnostic process.  The codes are:

P1133

P1126

P2177

P2187

P2179

 

Also, I have attached a photo of the engine that may provide a clue as to what is wrong with the car.

 

Thanks in advance

 

[Loren]

P1133 Lambda control adaptation FRAU (lower load range) - below limit value or above limit value

Possible fault causes
- Incorrect main filling signal from hot-film mass air flow meter
- Fuel pressure too high
- Injection valve faulty (dripping)
- Tank vent faulty (does not close completely)

or

Possible fault causes
- Intake system leaking (secondary air)
- Incorrect main filling signal from hot-film mass air flow meter
- Leak in exhaust system
- Fuel pressure too low
- Fuel injector faulty (stuck)
- Fuel pump delivery too low

 

P1126 Lambda control adaptation FRAU (lower load range) - below limit value or above limit value

Same as above (P1133)

 

P2177, P2187, P2179 

Same as above

[sobefun]

Thank you for the suggestions.

I have checked the exhaust and do not see any sign of leaks.  Also, non of the fasteners are loose.

Before getting into the engine I thought it best to hook up the durametric and log from starting the car to when the motor shuts down. Does the attached log indicate an obvious failure of a device such as the MAF?

 

 

3-6-21 Cayman Starting log.csv

[sobefun]

Starting down the rabbit hole.  It turns out the BMC air filter has suffered a catastrophic failure. The red plastic on the ends of the filter has basically disintegrated. I'm hoping for the best as I clean the airbox and intake. The PO must have installed the filter when he/she installed the Fabspeed exhaust.  NEVER will I use a BMC product after seeing this level of failure.

 

 

[RFM]

The throttle body will certainly require an intensive cleaning, the MAF sensor the same or better replaced to be sure. 

[sobefun]

Yes sir. This is going to require a serious cleaning.  I'll be ordering a new MAF and filter today.  Do you know if it is possible to remove the airbox without dropping the engine?  I want to ensure I get every spec of the BMC filter out, which will be much easier if I can remove the filter housing.

 

[sobefun]

Getting there.. (I hope)..

 

So far, I have cleaned the airbox and used a scope to peer into the areas where I could not see and got all the gunk out.

The screen on the MAF was about 60% blocked by the gunk and I did not see much evidence that the gunk made it past the 2nd screen which is tighter than the first.

Replaced the air filter.

Replace the MAF with a new unit.

Cleaned the throttle body.

Replaced o-ring for MAF and o-ring for the throttle body.

Cleaned the inside of all connecting boots and as much as the intake as I could while the throttle body was out.

 

The car fired up without a problem and idled pretty well, but after 20 seconds or so threw a P0300 and P0301.  I shut it down immediately and checked the errors with the durametric.

Here's what It says for the 301 Misfire message.

 

P0301 Misfiring, cylinder 1 Freeze Frame Information Fault symptom Limit exceeded   Self test not complete   Fault status fault not present   Warning light off   Fault path num 39424   FLC/HLC state 10   Fault check state 0A   FCM line status 00   FCM output data (mil, svs) 11   Error Path Status 513   Counter Continuous Error 0   Counter Accumulated Error 256   MIL on counter 1   MIL off counter 3   Clear counter 79   Frequency counter 1   Calculated LOAD value 40 % Engine coolant temperature 25 °C Short Term Fuel Trim - Bank 1 0 % Long Term Fuel Trim - Bank 1 0 % Short Term Fuel Trim - Bank 2 0 % Long Term Fuel Trim - Bank 2 0 % Vehicle speed sensor 0 km/h Ignition Timing Advance for #1 Cylinder 9 ° Intake Air Temperature 28 °C Absolute Throttle Position 14 % Commanded Secondary Air Status 01   Commanded Evaporative Purge 0 % Barometric Pressure 1000 kPa Relative Throttle Position 3 % Ambient air temperature 24 °C Absolute Throttle Position B 14 % Commanded Throttle Actuator Control 4 % Long term secondary oxygen sensor fuel trim - Bank 1 0 % Long term secondary oxygen sensor fuel trim - Bank 2 0 % Fuel system 1 status 0B7F   Engine RPM 1088 rpm Air Flow Rate from Mass Air Flow Sensor 10 g/s Absolute Load Value 44 % Total operating time (first occurrence) 1851.1 h Total mileage (first occurrence) 87996 km

 

Should I proceed to check the coil pack on cylinder 1 or may there a remaining issue left over from the failed filter?