03 Discovery Engine codes P1590 P0430 and Oil Light

[Lsmyth26]

Hey guys this just adds to my fun Saturday.

I was taking the trash and cut my truck back on it these 2 codes plus my oil pressure light. Engine was also knocking somewhat or could have been an exhaust leak I'm not sure. It was dark and I didn't have what I needed to check it out.

I have researched this somewhat already but any ideas on the issue or what I need to do to fix?

I drive this truck about 50 miles a week for fun and just had head gaskets and intake gaskets replaced about 5 months ago.

Thanks ahead of time for the help

Logan

 

[Lsmyth26]

Things just keep getting better now it's throwing codes: P0300 and P0306 cylinder 6 misfire

Any help on this or guidance would be great

 

[riceybean]

P1590 is a brake code, that might be a separate issue.

The others are a Cat and miss fire codes.

Clogged catalytic converter?

Then there is the oil light, that I don't know.

 

[Lsmyth26]

The truck just developed these issues 24 hours ago which is the most puzzling part. The P1590 brake code is probably because I need new brakes and brake lines so I somewhat understand that one. But the misfire was not expected. The truck also started sounding like a diesel truck which makes me think there my be an exhaust leak or exhaust issue.

The head gaskets were recently replaced so I hope that isn't the problem again because I don't want to pay for that again.

Thanks for the help.

 

[Lsmyth26]

I just put in new wires and plugs about 3 months ago but didnt replace the O2 sensors and honestly have no idea when it was done.

So I think I'm going to start with 4 new O2 sensors and go from there

Thoughts?

 

[rovercanus]

I would diagnose the oil light before I started throwing parts at it.

 

[speeddr2000]

The truck just developed these issues 24 hours ago which is the most puzzling part. The P1590 brake code is probably because I need new brakes and brake lines so I somewhat understand that one. But the misfire was not expected. The truck also started sounding like a diesel truck which makes me think there my be an exhaust leak or exhaust issue.

The head gaskets were recently replaced so I hope that isn't the problem again because I don't want to pay for that again.

Thanks for the help.

When you say like a diesel do you mean clanking or shaking.

 

[Lsmyth26]

I would diagnose the oil light before I started throwing parts at it.

Any ideas?....

 

[Lsmyth26]

When you say like a diesel do you mean clanking or shaking.

There is no shaking going on maybe a bit of clanking, the engine is just running a lot louder and making a kind of rumble but i cant tell if its the engine or the exhaust

 

[Lsmyth26]

In the shop for a blown oil pump

 

[rovercanus]

In the shop for a blown oil pump

I was going to say put a pressure gauge to check the actual pressure then start from there.
Looks like you are having it looked at now. Good luck.