P2074: The computer sees the intake manifold pressure and throttle position disagree in a way that points to too much air or a vacuum leak

MAP / throttle position correlation, high air flow or vacuum leak

Severity: Severity not verified — if the car runs badly, have it inspected

Ford's bulletins for this code describe an illuminated light with no other symptom, while owner complaints on other makes describe stalling and hesitation, so the class depends on how the vehicle is behaving and is not set from the code alone.

It gets more serious if:

Inspect soon: Have it checked soon if the engine stalls, hesitates badly or loses power. Owners of a 2003 Durango and a 2019 Silverado report those symptoms with this code.

Source: how we rate severity

P2074 in short

P2074 means the engine computer thinks the manifold pressure and throttle position do not match, as if extra air is getting in. Causes include a vacuum leak, a bad MAP or throttle sensor, or wiring. Ford diesel trucks have bulletins for a MAF reset. Get it checked soon if the engine stalls.

The computer compares how far the throttle is open with the pressure in the intake. If the pressure reads higher than the throttle position can explain, it sets P2074, and the published description is a high air flow or vacuum leak condition.

Most published causes are on the sensing side: a leaking intake or sensor line, the MAP sensor, the throttle position sensor or their wiring. The computer itself is listed as a last possibility.

Ford has several bulletins for P2074 on 2013-2019 F-Super Duty trucks with the 6.7L engine. They say a dirty air filter may be behind it and that a mass air flow reset should be tried before replacing the PCM or MAF sensor. Chrysler has a bulletin that lists P2074 for a reprogram on 2005 models.

Most likely causes

Cause 1: Air leak into the intake or a cracked sensor line
Common general cause
Why it ranks here
TroubleCodes.net lists vacuum leaks in the intake or sensor lines first, and the code's own title names a vacuum leak.
What would change this
Rises if smoke or a spray test finds a leak, or the fault appears with rough idle. Falls if the intake holds smoke.
How to test the vacuum hoses and intake leaks
Cause 2: MAP sensor, throttle position sensor or their wiring
Common general cause
Why it ranks here
The comparison is between these two sensors, so a skewed reading from either one, or damage to the wiring, sets the code.
What would change this
Rises if live MAP at key-on engine-off is not near outdoor pressure, or the throttle reading is erratic. Falls if both read plausibly.
Cause 3: Dirty air filter or air flow learning that needs a reset (Ford 6.7L trucks)
Supported by vehicle data
Why it ranks here
Two Ford bulletins for 2013-2019 F-Super Duty 6.7L say a dirty air filter may be behind a P2074-only light and give a MAF parameter reset instead of replacing the PCM or MAF sensor. The summaries are unverified, so this is vehicle data, not confirmed.
What would change this
Rises on a 2013-2019 Ford 6.7L with P2074 as the only code and a dirty filter. Falls on other vehicles.
How to test the mass airflow (maf) sensor

What to test first

Start at step 1. Each result tells you what it means and where to go next.

Step 1: Read all stored codes and freeze-frame data and note whether P2074 is the only one. Ford's bulletins apply only when it is the only code stored.
Low riskTool: OBD-II scan tool
- IfP2074 is the only code on a 2013-2019 Ford Super Duty with the 6.7L
  It meansCheck the air filter and ask a dealer about the MAF reset in the bulletin.
  Points to: Dirty air filter or air flow learning that needs a reset (Ford 6.7L trucks)
- IfMAP, throttle or other air metering codes are stored too
  It meansCheck for an intake leak and the sensor circuits.
  Go to step 2
Step 2: With the engine off and cool, look over the intake hoses, sensor vacuum lines and connectors for cracks, loose clamps or damaged wiring.
Low risk
- IfA hose is split or off, or a connector is damaged
  It meansAn air leak or wiring fault is likely.
  Points to: Air leak into the intake or a cracked sensor line
- IfNothing visible
  It meansCompare MAP and throttle readings on a scan tool.
  Go to step 3
Step 3: Watch MAP and throttle position live: with the engine off, MAP should read close to outdoor pressure, and throttle position should move smoothly with the pedal.
Best left to a shopTool: scan tool with live data
Warning:Smoke testing and live checks are done near a running engine, moving belts and hot manifolds; leave this to a shop.
- IfMAP is off at key-on or throttle readings jump
  It meansA sensor or its wiring is suspect.
  Points to: MAP sensor, throttle position sensor or their wiring
- IfReadings look normal
  It meansHave the intake smoke tested.
  Points to: Air leak into the intake or a cracked sensor line

Symptoms

Check engine light with no other change in how the vehicle drives
Hesitation or poor engine performance
Engine stalls or is hard to restart Gets more serious: stop and have it checked.

How to fix

Step 1: With the engine off and cool, check that the air filter is clean and the intake hoses are attached and not cracked.
Step 2: On a 2013-2019 Ford Super Duty with the 6.7L, ask a dealer whether the MAF parameter reset in the bulletin applies to your truck.

Parts and cost context

Vacuum hoses and intake leaks:Hoses are often the cheapest fix; find the leak before buying a sensor. Labour varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Ford

2013–2019 · F-350 Super Duty
Supported by vehicle data
Ford SSM 47597 covers a P2074-only light on 6.7L Super Duty trucks and points to the air filter and a MAF parameter reset. Whether it is still current is not verified.
2017–2019 · F-250 Super Duty
Supported by vehicle data
Ford SSM 47541 and TSB 19-2029 cover P2074 on 2017-2019 6.7L trucks. Whether they are still current is not verified.

SSM 47597Status unverified
MIL with only P2074, 6.7L (MAF parameter reset)
2013–2019f-350-super-duty, f-450-super-duty · NHTSA 10148731
MIL with only DTC P2074 on some 2013-2019 F-Super Duty 6.7L: may be a dirty air filter; do not replace the PCM or MAF; do a MAF parameter reset. Engineering investigating.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 47541Status unverified
MIL with only P2074, 6.7L (MAF parameter reset)
2017–2019f-250-super-duty, f-350-super-duty · NHTSA 10149773
MIL with only DTC P2074 on some 2017-2019 F-Super Duty 6.7L: do not replace PCM or MAF; do a MAF parameter reset.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 19-2029Status unverified
MIL with P2074 and/or P0170, 6.7L
2017–2019f-250-super-duty, f-350-super-duty, f-450-super-duty · NHTSA 10155552
MIL with P2074 and/or P0170 on 2017-2019 F-Super Duty 6.7L built on or before 9 Jan 2019. The NHTSA summary says to follow the service procedure and does not describe the repair.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

All Air metering (MAF, MAP and intake air temperature) codes

P2074 questions

Is P2074 a vacuum leak?

It can be. The code's published title names high air flow or a vacuum leak, but a MAP sensor, throttle sensor or wiring fault can set it too.

Should I replace the PCM for P2074?

No, not first. Ford's bulletins for 6.7L trucks say not to replace the PCM or MAF sensor but to try a MAF parameter reset.

Sources and review

Ford SSM 47597 (NHTSA 10148731) — NHTSA manufacturer communications database
P2074 trouble code page — TroubleCodes.net
NHTSA complaint ODI 10212134: 2003 Dodge Durango — NHTSA Office of Defects Investigation
NHTSA complaint ODI 11747417: 2019 Chevrolet Silverado 1500 — NHTSA Office of Defects Investigation
Ford SSM 47541 (NHTSA 10149773) — NHTSA manufacturer communications database
Ford TSB 19-2029 (NHTSA 10155552) — NHTSA manufacturer communications database
NHTSA complaint ODI 11398772: 2019 Ford F-250 SD — NHTSA Office of Defects Investigation
Chrysler bulletin 18-042-04 (NHTSA 10011543) — NHTSA manufacturer communications database

Last reviewed: October 16, 2026
Written by: Saurabh K.
Editorial review: Pending
Technician review: Technician review pending

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error

Severity: Severity not verified — if the car runs badly, have it inspected

Most likely causes

Cause 1: Air leak into the intake or a cracked sensor line

Cause 2: MAP sensor, throttle position sensor or their wiring

Cause 3: Dirty air filter or air flow learning that needs a reset (Ford 6.7L trucks)

What to test first

Step 1: Read all stored codes and freeze-frame data and note whether P2074 is the only one. Ford's bulletins apply only when it is the only code stored.

Step 2: With the engine off and cool, look over the intake hoses, sensor vacuum lines and connectors for cracks, loose clamps or damaged wiring.

Step 3: Watch MAP and throttle position live: with the engine off, MAP should read close to outdoor pressure, and throttle position should move smoothly with the pedal.