What Does P010F Mean?
The ECM has detected that the readings from MAF sensor "A" and MAF sensor "B" do not correlate properly — their signals disagree beyond an acceptable margin under the same operating conditions. On dual-intake-tract engines, both sensors should report proportional airflow. This code indicates one or both sensors are reading inaccurately, which can degrade fuel metering and overall engine performance.
Common Causes
35%
One MAF sensor is contaminated or degraded while the other is still accurate
25%
Air leak on one intake tract but not the other, causing unequal measured airflow
15%
Different air filter restriction levels between banks (one clogged, one clean)
15%
Wiring issue on one MAF sensor circuit shifting its reading relative to the other
10%
Failed MAF sensor (A or B) providing consistently offset readings
Diagnostic Steps
1
Compare live data from MAF "A" and MAF "B" at idle, 2000 RPM, and 3000 RPM — on a properly functioning dual-tract system, readings should be within 10-15% of each other.
2
Inspect both air filters and air intake tracts independently. Ensure both are equally clean and free of obstructions or collapse.
3
Check both intake ducts for air leaks downstream of the respective MAF sensors using a smoke machine or propane enrichment test.
4
Remove both MAF sensors and inspect the sensing elements for contamination. Clean both with MAF sensor cleaner and retest for correlation.
5
If one sensor is consistently reading lower or higher than the other after cleaning and leak checks, swap the A and B sensors physically and see if the offset follows the sensor or stays with the tract.
Estimated Repair Cost
$50 - $400
Parts + labor, varies by vehicle and location
The ECM has detected that the readings from MAF sensor "A" and MAF sensor "B" do not correlate properly — their signals disagree beyond an acceptable margin under the same operating conditions. On dual-intake-tract engines, both sensors should report proportional airflow. This code indicates one or ...
The most common cause of P010F (Mass or Volume Air Flow Sensor A/B Correlation) is: One MAF sensor is contaminated or degraded while the other is still accurate
Typical repair costs for P010F range from $50 to $400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
The vehicle is generally safe to drive but may exhibit uneven power delivery between banks. Extended driving with mismatched air metering can lead to cylinder-to-cylinder imbalance and potential catalyst damage on the affected bank.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P010F to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel / Air Metering
Difficulty
Type
Generic (SAE)
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