Charge air pressure actual value 0.0 help!

[Thibodeauxdj21]

Im a Audi newbie just bought a 2012 Audi s4 prestige after going through OBDeleven I noticed my (Charge air pressure actual value) shows 0.0psi.... car runs strong to me but dose have cel on, faults=p007d00, p00a300, p023700, p024100. I’ve changed the map sensor on rear side of engine and was going to change two sensors on sides when I noticed previous owner had cut some of the wires, after doing some research figured the reason for cutting wires is so that sc cooling pump would run at 100% but that shouldn’t cause cel or 0.0psi charge pressure?

[djn876]

I think the P007D00 is Bank 1 MAP (Passenger Side) and P00A300 is Bank 2 (Driver Side). The P0237/P0241 is low input one on each bank as well. Almost sounds like they aren't connected. The MAP sensor in the back doesn't measure boost pressure so that wouldn't be your problem. These codes are for the ones towards the front of the car. Check that the sensors are plugged in properly.

The coolant pump wire cutting would not impact the MAP sensor. I would also verify that parameter will read actual pressure on the OBD-11, not sure how it figures out its PIDs, but if it is generic, not every point may read a value. I don't use it so not sure in this case how true that is. Try clearing the codes and see if any come back as well, but those are all related codes so likely a sensor problem. Could be that someone just started the car and forgot to plug them in, though it should self-clear once plugged in again.

I am assuming the wires cut are down at the coolant pump and not up in the main harness or anywhere else.

[Thibodeauxdj21]

I think the P007D00 is Bank 1 MAP (Passenger Side) and P00A300 is Bank 2 (Driver Side). The P0237/P0241 is low input one on each bank as well. Almost sounds like they aren't connected. The MAP sensor in the back doesn't measure boost pressure so that wouldn't be your problem. These codes are for the ones towards the front of the car. Check that the sensors are plugged in properly.

The coolant pump wire cutting would not impact the MAP sensor. I would also verify that parameter will read actual pressure on the OBD-11, not sure how it figures out its PIDs, but if it is generic, not every point may read a value. I don't use it so not sure in this case how true that is. Try clearing the codes and see if any come back as well, but those are all related codes so likely a sensor problem. Could be that someone just started the car and forgot to plug them in, though it should self-clear once plugged in again.

I am assuming the wires cut are down at the coolant pump and not up in the main harness or anywhere else.

They were cut at the sensor and that’s why I wasn’t getting and boost reading.... I spliced the wires back together and it’s shows the boost/ cleared errors but took it for a test ride it drove normal but as soon as I get on (maybe a 1/4 throttle it went into limp mode) I’ve been having it about two months this is first time it’s went into limp.... turned car off and it was fine, drove home slow, hooked up code reader and it showed p118800 Ctrl module faulty