Wondering if anyone has experience with these codes...

2000 Accord 4cyl w/180k miles
P1382 - Cylinder Position Sensor, No Signal
P1122 - Throttle Position Higher Than Expected
P1106 - Barometric Pressure Circuit Range/Performance

I'm having a bit of a hard time believing that all of these sensors have failed at the same time especially since the car runs very well. Some symptoms I have noticed though is some surging idle when I come to a stop, and a strong pulsing of air coming from the oil fill hole when the car is running and cap removed...

Any thoughts?

 

Check the wiring harness and grounds. Possibly a loose or failing connection somewhere in the harness. Trace all the wires out and see if there is a common fault.

 

Ah ok. Are there any major grounding junction points to be aware of?

 

A clogged air filter or air intake sometimes set DTC 1106. Remove those and clean out any debris, etc. and/or replace air filter.

 

If I'm not mistaking the baro sensor on that car is inside of ECM.Do you have access to scanner?You could compare BARO sensor against MAP and see if it make sense.That's the quick way to confirm that the problem is not intermittent.From there you will have to test the sensors/wiring to ECM manually.I do not see the corelation between these codes.

 

Yes, you are not mistaken.

 

I don't have direct access to a scan tool, I just went to a parts store to have it scanned for free.

What do you guys think of clearing the codes and then see which one(s) pop up first? I'm assuming you can just disconnect the battery to do so? I'm pretty sure I have my radio code handy.

 

Well, you can; but, if you haven't check the air intake and air filter, I would still check that first related to P1106. It doesn't costs anything to check for a clogged filter and/or other debris in the intake tube (check the tube all the way to the throttle body).

 

Air filter was kinda dirty so I replaced it and everything looked ok in the intake tube.

 

good move

 

Well went to the dealer today and had them scan/diagnose while doing an scheduled oil change. Here is what my invoice says

'After clearing the codes, none of them came back on. I checked the Throttle Position Sensor and it is reading properly at 10%. The CYP sensor seems to be reading also at this time. The plug wires all check out ok and the dist. readings with the ohm test, tested out good. It is possibly an intermittent wiring issue or something internal in the ecu. I then looked into the baro sensor and the code never came back on. If it does we are supposed to replace the ecu. The baro matches the map sensor at this time like it is supposed to do. If any of these codes come back on we will possibly have to diag further and/or replace the ecu and throttle body.'

Since driving it home and for a few errands the light has not come back on. Still when the engine is warmed up my idle still rises to about 2k rpm while coming to a stop and when I come to a complete stop it will return to normal.

My original thought possibly was a dirty or faulty idle control motor or clogged EGR passages since I've heard these being common issues but I guess these are ruled out?

I'm basically just wondering if anyone has seen these symptoms/codes before.