Need help with car codes - Fuelsystem openloop - Alfa Romeo Forum
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Need help with car codes - Fuelsystem openloop

I have got the following codes on my car - after installing a new engine:

Stored DTC:
P0100 Mass or Volume Air Flow A Circuit

Pending DTC:
P0136 O2 Sensor Circuit Bank 1 Sensor 2
P0443 Evaporative Emission System Purge Control Valve Circuit
P0135 O2 Sensor Heater Circuit Bank 1 Sensor 1
P0141 O2 Sensor Heater Circuit Bank 1 Sensor 2
P0130 O2 Sensor Circuit Bank 1 Sensor 1

I have tried to clear them, but they return...

On live scan I get at Fuelsys1 the following: OL-drive, or OL-fault,
which I understand means the car is at open loop...
In addition, the MAF sensor always reports 0.00 g/sec
While there is voltage from the O2 sensor...

I understand that it might caused due to wiring/computer/etc..
I will talk to my mechanic tomorrow... however does anybody have experience with those things and any tips / ideas to share?

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Lift the L/H ecu plug off (as you look from the front) and check there are no bent pins, if that's fine check the earth betwen he ECU and the battery for resistance. Ifthat's all OK start with a new battery after checking the terminals are connected tightly.
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car , codes , fuelsystem , openloop

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