Performance Problems



Fault symptoms

• CHECK ENGINE.

Type of diagnosis:

- Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.

Enable criteria:

- General conditions for this trouble code: Atmospheric pressure must exceed 72 kPa and the engine coolant and intake air temperatures must exceed -7 °C.

- Main relay voltage exceeding 10V. Engine speed below 3500 rpm. The inlet pressure drops rapidly by more than 3 kPa whereupon the accelerator pedal is fully released. The charge air pressure exceeds 120 kPa. The solenoid valve for the by-pass valve has been deactivated.

Fault criteria:

- Charge air pressure pulsating at 14-18 Hz with amplitude exceeding 3 kPa. Criteria must be fulfilled on two separate occasions within 600 s during the same driving cycle.

Dependents:

- P0106, P0107, P0108, P1105, P1106, P1107, P1108, P1530, P1531, P1532, P1631, P1632 and P1633.

System reaction to a fault:

- The MAP sensor is used as a substitute value.

OK report:

- Enable criteria fulfilled and amplitude below 1 kPa. Criteria must be fulfilled on three consecutive occasions during the same driving cycle.

Diagnostic help

Fault diagnosis concerns a fault in connecting control hoses, in the solenoid valve or the bypass valve.

Functions in the diagnostic tool related to the fault:

• Diagnostic status for the diagnosis.
• Activate output for bypass solenoid.

Did anyone ever resolve the issue at hand when the p1110 code was pulled? I recently purchased a 2004 9 5 aero and this code came up almost a week ago. I would like to get it fixed before I hit the road this weekend.

There are quite a few threads about the P1110 code. You may get quicker assistance when you reply to an existing thread if you think that applies to your situation as well. Just put P1110 in the search box and you'll find the threads.

I found the problem. The hose is missing from that main tube beside the oil filler cap

Do you have a photo of exactly the hose that was missing and where you installed the replacement? Why would that hose be missing? Did that solve your P1110 code issue?

Got the P1110 code on the way to work this morning. Searching under the hood I found a disconnected hose. Question is where does it reattach?

Where does it come from?

hopefully this picture will be more clear. the tube comes from a t-joint.

Once I get back down to my building's parking garage I can check this diagram.

still couldn't find a nipple.

So, I'm still not sure where that hose attaches. I recently replaced the coolant bypass valve and may have pulled it loose then. I'll determine what it connects to this weekend.

I did get the p1110 code to go away. I used the bolt mod as seen here. SAAB Secret: Retrieve Lost Turbo Pressure for FREE in Less Than a Minute | Econmancer

My 2004 9-5 Aero recently displayed a Check Engine light and the P1110 code. So, I came to this thread looking for some guidance. After reading the above posts I lifted the hood and looked for disconnected and/or broken hoses, but didn't see anything. I started the car and began to listen for vacuum leaks, but didn't hear anything at first. After about a minute or two I heard what sounded like a relay or a solenoid click from the area around the throttle body then a sucking sound started. It was hard to tell where the sound was coming from so I took the metal bits off of the end of my mechanics stethoscope thinking I could isolate the sound with pin-point listening, but no luck.

It took me about ten minutes of leaning over with my ear close to the engine, moving from one side of the engine compartment to the other and back again, and wiggling hoses to discover that one of the hoses had rubbed on something enough to produce a hole. At one point it stopped making noise because the rotational twist in the hose must have sealed the leak. Frustrating! After spending 4$ on a length of new vacuum hose and clearing the code, all is well.

Thanks everyone!