P1554 code. What should I do?

richard_masa_4200

Junior Member
Messages
195
So. My 2002 CC 4200 is persistantly throwing a P1554 code. I have googled the code and it looks like I have a CAM solenoid or sensor issue. My question is, is this something I can look at myself, or do I need to take it to an independent to get a professional opinion?

It also has an issue with acceleration that appears when I have 2/10 of the peddle down (I have FD DBW installed). It's just not as smooth.

I'm looking for suggestions on which path to take. I have the ability to pull her apart and replace stuff, but she is my daily drive. Should I just bite he bullet and book her in for a service and health check, or try and fix her myself (with all of your expert help of course) :love4:
 

Emtee

New Member
Messages
8,446
Hi Richard,

I'm afraid I can't help you with your first question, but with the accelerator, from a number of posts and my own experience, there seems to be a suggestion that either the throttle pedal potentiometer itself or the throttle programming generates a flat spot. I had this with my 4200 and thought it might be wear, as this is where the car idles most of the time, so I swapped out the throttle pedal pot' and the replacement was just the same. I then installed the FD DBW and that made no difference. I'm not sure whether Loz ever installed his FD DBW, but he noticed this too.
 

conaero

Forum Owner
Messages
34,594
I have cross refer that one and its coming out as:

P1554 - Idle Speed Control Throttle Position Basic Setting Conditions not met

I would have to tend to agree with Miles and look at the throttle pot first.

I would remove the DBW, my old GS had a light come on a week after I sold it and they fixed it by removing the DBW.

If it is this then send it back to Jeff, he's very helpful, might also be worth pinging him off an email to see if he is aware of this code relating to his DBW.
 

richard_masa_4200

Junior Member
Messages
195
Jeff came back to me and said it wasn't a known problem with the DBW. He said P1554 was 'Camshaft Control Inlet, Circuit (Cylinder Bank 2)'. I have checked and cleaned both camshaft position sensors, but they could be faulty. I will do a full electrics reset and see if the problem goes away. Does anyone know which side cylinder bank 2 is?
 

conaero

Forum Owner
Messages
34,594
Cylinder 2 is left side 2nd one back from the front, as you stand at the front off the car looking down onto the engine.

They go 1-4 on the left then 8-5 on the right. (front to back)
 

Geofflyn

New Member
Messages
560
So. My 2002 CC 4200 is persistantly throwing a P1554 code. I have googled the code and it looks like I have a CAM solenoid or sensor issue. My question is, is this something I can look at myself, or do I need to take it to an independent to get a professional opinion?

It also has an issue with acceleration that appears when I have 2/10 of the peddle down (I have FD DBW installed). It's just not as smooth.

I'm looking for suggestions on which path to take. I have the ability to pull her apart and replace stuff, but she is my daily drive. Should I just bite he bullet and book her in for a service and health check, or try and fix her myself (with all of your expert help of course) :love4:

Richard you could also try just disconnecting the DBW by putting that plug in to see if it does eliminate the DBW as being problematic in some way
Geoff
 

richard_masa_4200

Junior Member
Messages
195
In the end I had to replace the 'camshaft timing sensor'. Both of them to be safe. They are located on both rocker covers right at the firewall end. It's easy to get the sensor off the rocker cover. Its a pain to get at the wiring which for some reason is at the firewall under the inlet manifold. Go figure. I was able to get the sensors from the US and only cost AUD245 for the 2 delivered.

So it didn't have anything to do with the DBW, just a faulty sensor. As the car has now done 94000 miles, I'm not surprised a sensor will go now and then.
 

richard_masa_4200

Junior Member
Messages
195
OK. So it's back. Urrggghhh.

What I have done so far:

1. Replaced both cam shaft timing sensors with new.
2. Replaced the throttle pot with new. <Without the hands of a Japanese school girl, this is no simple feat>
3. Removed and cleaned the throttle body.

It does not throw the code as often and does not seem to hunt for idle as much as it used to, but the code is still appearing.

Thought? Suggestions? Useless comments?

All accepted.
 

adam01

Member
Messages
1,079
OK. So it's back. Urrggghhh.

What I have done so far:

1. Replaced both cam shaft timing sensors with new.
2. Replaced the throttle pot with new. <Without the hands of a Japanese school girl, this is no simple feat>
3. Removed and cleaned the throttle body.

It does not throw the code as often and does not seem to hunt for idle as much as it used to, but the code is still appearing.

Thought? Suggestions? Useless comments?

All accepted.

Unless comments contribution

GM OBD Error Code Details for P1554
Cruise Engaged Circuit High Voltage

Mazda OBD Error Code Details for P1554
Fuel injector No.4 range/performance malfunction

*** OBD Error Code Details for P1554
Idle Speed Contr.Throttle Pos. Basic Setting Conditions not met


Volvo OBD Error Code Details for P1554
System relay Faulty signal or signal missing
 

rotorheadcase

Junior Member
Messages
415
I would look at the plug to see if it is making a good contact or the wiring is worn/grounding out somewhere. If it's intermittent then this would be my first thing to check. I don't know the 4200 engine but could the solenoid or actual cam variator be sticking and therefore not "agreeing" with where the sensor thinks it should be?

Neil
 

richard_masa_4200

Junior Member
Messages
195
I would look at the plug to see if it is making a good contact or the wiring is worn/grounding out somewhere. If it's intermittent then this would be my first thing to check. I don't know the 4200 engine but could the solenoid or actual cam variator be sticking and therefore not "agreeing" with where the sensor thinks it should be?

Neil

Very good thought Neil. Unfortunately the wiring for the sensor is concealed at the firewall end underneath the inlet manifold. Not a simple job. Also, getting to the cam variator would mean getting the heads off as well. As she is my daily drive at the moment I don't think I'll be attempting any of those until I get another drive. Thanks for the input though. It doesn't seem to effect the performance, the CEL just gives me the sh&ts more then anything else.
 
Last edited:

Geofflyn

New Member
Messages
560
OK. So it's back. Urrggghhh.

What I have done so far:

1. Replaced both cam shaft timing sensors with new.
2. Replaced the throttle pot with new. <Without the hands of a Japanese school girl, this is no simple feat>
3. Removed and cleaned the throttle body.

It does not throw the code as often and does not seem to hunt for idle as much as it used to, but the code is still appearing.

Thought? Suggestions? Useless comments?

All accepted.

Time to take it to Terzini
Geoff
 

Biturbista

New Member
Messages
20
So. My 2002 CC 4200 is persistantly throwing a P1554 code. I have googled the code and it looks like I have a CAM solenoid or sensor issue.
The description Maserati provides for P1554 is 'CAMSHAFT POSITION ACTUATOR, INLET (BANK 2) : OPEN'. In this case the 'open' refers to a wire on which no resistance is measured which could either be what it suggests (ie. a cut wire) or a dodgy connection. It is an error which is thrown in the overall surveillance process which checks for shorted wires or wire connections which appear to have been cut. In case of a short circuit in this sensor, the ECU will throw error code P1553 instead.
 
Last edited:

davy83

Member
Messages
2,809
A little off piste here but where did you get the Maserati code definition from biturbista? I have a 2001 3200GTA with an ODBII connector on it but jsut can't decipher the codes. I have been making a list of ones that have been mentioned on the forum but a definitive list would be pretty handy!