What Does P2073 Mean?
The PCM has detected a mismatch between the Manifold Absolute Pressure or Mass Air Flow sensor readings and the throttle position sensor at idle. This indicates an air metering or vacuum leak issue.
Common Causes
35%
Vacuum leak in intake manifold, hoses, or gaskets
25%
Dirty or failed MAF sensor providing incorrect readings
20%
Faulty MAP sensor or stuck/leaking MAP sensor hose
15%
Throttle body carbon buildup affecting airflow at idle
5%
Faulty throttle position sensor providing incorrect data
Diagnostic Steps
1
Step 1: Monitor live data for MAP/MAF, throttle position, and calculated load at idle to identify discrepancies
2
Step 2: Perform smoke test or propane enrichment test to locate vacuum leaks
3
Step 3: Inspect and clean MAF sensor element; verify proper installation and wiring
4
Step 4: Check MAP sensor operation and vacuum line for cracks, kinks, or blockage
5
Step 5: Inspect and clean throttle body; verify throttle plate closes completely at idle
Estimated Repair Cost
$150 - $600
Parts + labor, varies by vehicle and location
The PCM has detected a mismatch between the Manifold Absolute Pressure or Mass Air Flow sensor readings and the throttle position sensor at idle. This indicates an air metering or vacuum leak issue.
The most common cause of P2073 (Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Idle) is: Vacuum leak in intake manifold, hoses, or gaskets
Typical repair costs for P2073 range from $150 to $600, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Generally safe to drive short distances but may cause rough idle, stalling, or poor fuel economy. Extended driving could damage catalytic converter.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2073 to identify the root cause.
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Quick Info
Category
Powertrain
System
Engine Air Intake and Fuel Metering
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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