ERROR CODE P2074

[spinner]

My wife was coming home and the check engine light came on so she stopped by NAPA and had it checked and it came up with p2074? any ideas? they told her it may be a dirty air cleaner, which I doubt, I put a new CAI on it 4 months ago and this is the first code it has thrown? so any help would be great!!!
Thanks

[CREWZIN]

BUMPING DOES NO GOOD WHEN YOU HAVE THE ONLY POST. When there's a few posts after yours of a different subject then bumping brings it to the top of the list of threads. When there's no other posts, all bumping does is add to your own post. It's still flagged as a new post to everyone that comes to the forum without the bumping.


P2074-Manifold Pressure/Throttle Position Correlation - High Flow/Vacuum Leak

Possible causes:

Vacuum Leak
High Resistance in Map (K7) 5 Volt Supply Circuit
Resistance to Ground In Map (K7) 5 Volt Supply Circuit
MAP Sensor
High Resistance in (K1) Map Signal Circuit
Resistance to Ground in (K1) Map Signal Circuit
High Resistance in (K4) Map Ground Circuit
TP Sensor Operation
High Resistance in (K7) TP Sensor 5 Volt Supply Circuit
Resistance to Ground In (K7) TP Sensor 5 Volt Supply Circuit
TP Sensor
High Resistance in (K22) TP Signal Circuit
Resistance to Ground in (K22) TP Sensor Signal Circuit
High Resistance in TP (K4) Sensor Ground Circuit
PCM

As you can see there are a number of possible issues which can cause this DTC. You may be able to visually check a few things (vacuum) on your own however the majority of tests require the use of a DRB III scan tool, diagnostic manual and other test equipment. Based upon your description I would lean towards a vacuum related issue.

1. Inspect the Intake Manifold for leaks and cracks.
2. Inspect the Power Brake Booster for any vacuum leaks.
3. Inspect the PCV system for proper operation or any vacuum leaks.

[spinner]

Thanks for the info, I will start checking the lines and intake this weekend! hopefully it will be something simple!!!

[TheAnt]

When somebody has worked on it, like me for instance, vacuum hose may be left off or loose. I left off the two hoses on the passenger side closest to the firewall. One is the brake booster.

A severely cracked or loose hose might be affected by vibration like a bump in the road or backfire.

Assuming nobody has been working on it I would suspect a vacuum hose problem.

The above is the only P2074 I ever saw without other codes.

Originally Posted by spinner

My wife was coming home and the check engine light came on so she stopped by NAPA and had it checked and it came up with p2074? any ideas? they told her it may be a dirty air cleaner, which I doubt, I put a new CAI on it 4 months ago and this is the first code it has thrown? so any help would be great!!!
Thanks

[ptcruisersteve]

This thread is approximately 7 years old!

If I was to answer 7 years ago I would have suggested resetting the DTC's with an OBDII Scan Tool and see if the code came back.

[TheAnt]

oops, sorry