Possibly all tied together?

[06MountaineerPA]

My CEL came on recently and with a list of codes. I thinking that some of them are caused by one another. So where should I start first to start eliminating the issues. I dont want to throw parts at it, if all I need to do is replace one to solve the rest.

Is the P0193 code triggering the lean codes? Are the bad O2 sensors being triggered by P0171 & P0174 codes? I cant imagine all 4 of my O2 sensors failing all at once.

Anyone deal with something like this before?

Here are the codes

P0135 - O2 sensor bank1, sensor1, P0141- O2 sensor bank1, sensor2, P0155 - O2 sensor bank2, sensor2, P0161 - 02 sensor bank2, sensor2

P0171 & P0174 - System Too Lean Bank 1 and Bank 2

P0193 - Fuel Rail Pressure Sensor Circuit High input

P0443 - Evap Emission Control Purge Control Value failure

 

[BlueOvall4Life]

My CEL came on recently and with a list of codes. I thinking that some of them are caused by one another. So where should I start first to start eliminating the issues. I dont want to throw parts at it, if all I need to do is replace one to solve the rest.

Is the P0193 code triggering the lean codes? Are the bad O2 sensors being triggered by P0171 & P0174 codes? I cant imagine all 4 of my O2 sensors failing all at once.

Anyone deal with something like this before?

Here are the codes

P0135 - O2 sensor bank1, sensor1, P0141- O2 sensor bank1, sensor2, P0155 - O2 sensor bank2, sensor2, P0161 - 02 sensor bank2, sensor2

P0171 & P0174 - System Too Lean Bank 1 and Bank 2

P0193 - Fuel Rail Pressure Sensor Circuit High input

P0443 - Evap Emission Control Purge Control Value failure

I had same codes except for P0193.
2006 4.6l mountaineer (209k now)
I thought the same, could all four O² sensors gone simultaneously?
A friend with body shop w/fancy scanner, said it wouldn't hurt to change them.
Codes still appeared, and then it was determined that the ECM was bad.
Replaced, snd keys had to be reprogrammed to the tune of $800 or so.
Has to be Dealer or Local with proper equipment. You have to have both keys though.
Make certain before you start throwing $ at it.
BTW, what engine?

 

[Mbrooks420]

Sounds like you’re sucking in unmetered air to me.

As for the ECU, I highly doubt that’s your issue. If it is, a locksmith can program keys cheaper, or you can do it yourself with FORScan.

 

[06MountaineerPA]

4.6L with 225K

I'll check for a vacuum leak.

 

[Blackhawkxx]

Replaced, snd keys had to be reprogrammed to the tune of $800 or so.

A local locksmith did it for me at my home for $50 including the Ford key.

 

[Explorer_PL]

.....or not enough fuel pressure.