Disco II error codes

[jaacina]

My Disco II wass giving me an error codes P1884, p0734 and P0174/P0171. I have tried two new MAF, but they did not solve the error codes. So I replaced the intake manifold gaskets and replaced the PCV hoses. I cleaned the intake manifolds. I also cleaned the plugs and put some dielectric grease on the connections.

Now I am getting P1884, P0445, P0448, P0102, P0340, P0134, P0154, P0135, P0155, P0141, P0161, P0140, P0160.

I am not sure why the Evaporative codes are coming. Maybe the dielectric grease?
The cam sensor really has me confused.
Maybe I still am having trouble with the MAF. Since both front O2 sensors are not working maybe they are both shot. I wonder if they could be causing my headaches.

 

[jaacina]

Do you think I should try a new MAF from the dealership instead of Atlantic British? Or should I try new O2 sensors?

 

[jaacina]

Any thoughts on what you would check next?

 

[robertofollia]

I guess it's the 02 sensors. Does it run or does it stall abruptly.
Your MAF should be P0102, which is the case. My MAF failed too, but made the 02 sensors go crazy, and threw error codes for them, too. Changed MAF and codes went away.

So far, your codes P045, P0448 are purge-valve related
P0340is the camshaft position sensor, it seems it's shot.
P0134 and P0154 are the 02 for both banks, shot
P0135 and P0155 are the 02 heater for both banks
P0141 and P0161 are the 02 heater for #2 o2 sensor, both banks
P0140 and p0160 are for the 2nd 02 sensor too.

To sum up, i would say your MAF is OK, you do not seem to have an air leakotherwise p0171 and p0174 (too lean) would be thrown.

Your camshaft sensor is shot
and your 4 O2 sensors need renewing ASAP.
The P1884 is an invalid CAN message. Maybe something to do with Crankshaft sensor (CKP). If truck stalls, 1 hour later starts right away an in 10 minutes later stalls again, it's the CKP.

Hope that helps. Good luck!

 

[jaacina]

I wonder how the Camshaft sensor would be shot after a couple of hours with the intake manifold off?

The truck runs fine. Starts up great. Has a lot of power. Seems to run smooth. Not sure why it went from the lean on both banks to know giving me these other codes. I just don't get it. Maybe the front O2 sensors are shot. Not sure. This all started after towing a trailer on a very hot day. The engine never got warm according to the temp gauge though.

Disconnecting the battery does not clear the codes, so I will maybe try clearing the codes with a scanner.

I will also try new O2 sensors. Just the front 2 though.

I guess it's the 02 sensors. Does it run or does it stall abruptly.
Your MAF should be P0102, which is the case. My MAF failed too, but made the 02 sensors go crazy, and threw error codes for them, too. Changed MAF and codes went away.

So far, your codes P045, P0448 are purge-valve related
P0340is the camshaft position sensor, it seems it's shot.
P0134 and P0154 are the 02 for both banks, shot
P0135 and P0155 are the 02 heater for both banks
P0141 and P0161 are the 02 heater for #2 o2 sensor, both banks
P0140 and p0160 are for the 2nd 02 sensor too.

To sum up, i would say your MAF is OK, you do not seem to have an air leakotherwise p0171 and p0174 (too lean) would be thrown.

Your camshaft sensor is shot
and your 4 O2 sensors need renewing ASAP.
The P1884 is an invalid CAN message. Maybe something to do with Crankshaft sensor (CKP). If truck stalls, 1 hour later starts right away an in 10 minutes later stalls again, it's the CKP.

Hope that helps. Good luck!

 

[robertofollia]

Maybe there's a bad connection or cable.

better erase the codes and see if there are any more new thrown.
Sometimes when the systems goes crazy it disconnects O2 sensors to run in open circuit loop.

 

[Chris-St Louis]

Wow. Stop!

Clear the codes. Spend the money at the zone and just buy one of these.
http://www.autozone.com/servlet/UiB...E|~NONE|~NONE|~NONE|~1.45|~NONE|~N|~ACM|~true
Clear your codes and see what happens.


You unlikely need any sensors. Did you have the key on when everything was unplugged?

Did you hook up the grounds correctly.

The chances of 4 O2 sensors failing along with a Crnkshaft sensor are almsot impossible.

Did you put Grease on the sensors connections?

 

[jaacina]

I put grease on the purge valve and the the throttle position sensor plus the MAF. Just around the outside. Tried not to get any into the plugs. I have since cleaned the purge valve's connection. Did not touch the O2 sensors, nor the cam sensor.

I agree that I find it impossible that 4 o2 sensors, 1 cam sensor and the purge valve could all fail at the same time.

I did not turn the key while anything was unplugged. The ground I hooked back up to where it was connected on the mount for the alternator/belt tensior, etc...

Is the Actron a good scanner? It looks like it is not availble though.

 

[Chris-St Louis]

Its good enough.

Everyone says go to the Zone to get codes, but I think your not willing to spend $100 or less to get codes and clear them..... Your not serious about fixing your car.


Get one from somewhere, is the bottom line.

 

[robertofollia]

I use actron CP9135S, it rocks.
However, quite strange for all these components to fail at the same time

 

[jaacina]

I read the codes, but forgot to clear them. I keep meaning to buy a decent scanner but have not checked into what is the best one to buy. I will pick one up. I agree about how much easier it would be to just have it instead of running to a store to have them read.