Quote:
Originally Posted by yummyporsche
Running into DTC's in pending for P1125 and P1132 and can't get the I/M readiness monitors for emissions testing. DME 7.2. Driven this thing a lot trying to get emissions going, but decided to get a scanner to check out the readings.
I got an Autel MD802 and got these readings in red:
O2 Sensor Bank 1 Behind Cat. Conv: R= 320 ohm , V = 0.7
O2 Sensor Resistance behind Cat. V. Bank 2: 192 ohm, V=0.7
Throttle Plate Angle Potentiometer #2: 1.6%
Carbon Canister Load 126.72
Engine Roughness Cylinder, 0.3 - 0.5 l/s^2
Other Information:
MAF: 5.7g/s
Seems unlikely that both my O2 sensors would be bad, or that both my cat. converters would be bad. What would cause the carbon canister load value high, and engine roughness cylinder?
+ also tried to take them off for cleaning but they're seized in there and can't get em out.
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Codes like the ones your getting are not immediately harmful to the cats.
So the first time an event happens that can trigger the codes.
The ECU stores the codes in it's memory (pending codes).
If the same type of event occurs on two back to back drive cycles the ECU moves the codes to permanent and turns your check engine light on.
If you have pending or permanent codes your I/M readiness monitors associated with the codes will not reset.
The codes your getting are indicating an overly rich fuel/air mixture
The voltage readings on the O2 sensors are confirming the codes.
Do you have a stock air filter?
Or after market?
Is it Clean?
You could try cleaning the MAF sensor with a spray MAF cleaner. Cheap easy first step.
What year is the car?
How many miles on it?
Have you done any recent work on it?
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