
20 May 2013, 09:42 pm
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Fresh Cruiser
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Join Date: Mar 2011
Posts: 7
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P2074 Error, Cause and Resolution
2009 Non Turbo
Got a check engine light this morning. Did the Key ON/OFF/ON/OFF/ON trick and saw error code P 2074. No other code displayed.
Read other posts here and saw Crewzin's reply about this code:
P2074-manifold Pressure/throttle Position Correlation
CORRELATION - HIGH FLOW/VACUUM LEAK
When Monitored: Engine Running, during all drive modes.
Set Condition: If vacuum drops below 1.5 Hg with engine RPM greater than 2000 RPM
at closed throttle.
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
PCM
TP SENSOR OPERATION
HIGH RESISTANCE IN (K6) TP SENSOR 5 VOLT SUPPLY CIRCUIT
RESISTANCE TO GROUND IN (K6) 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
Won't tire you with the details of my cause. Basically when I changed the air filter a few days ago, I guess I didn't get the air filter cover on all the way.
Checked under the hood after getting home from work and noticed the cover looked strange. Unclamped both sides, reseated the new air filter and popped the cover back on. Looked correct, put the clamps back and turned the key. Check engine light went off.
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