P0069

Manifold Absolute Pressure - Barometric Pressure Correlation

Fuel & air metering Generic OBD-II High

What it means

P0069 sets when the manifold absolute pressure (MAP) reading doesn't correlate with barometric pressure the way the ECM expects. Because MAP is a primary load signal for fueling, a mismatch can cause hesitation, rough idle, and occasional stalling. A drifting MAP sensor, a clogged sensor port, or a vacuum leak are the most common causes.

High

Can I keep driving? Usually drivable, but hesitation, stalling, or reduced power are possible — fix it before it strands you.

Real-world scan data

Seen in

2,642

scans in the past year

Found in

0.4%

of scans

0.7%

of scans that found faults

Appears alongside · share of P0069 scans

P0335in 23.5% of scans

P2227in 23.2% of scans

P0217in 21.9% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Reduced power or hesitation on acceleration
Rough idle
Possible stalling
Slightly worse fuel economy

Common causes

Most likely first

Faulty or drifting MAP sensorLikely
Vacuum leak affecting manifold pressureCommon
Clogged or restricted MAP sensor port/passageCommon
Wiring or connector problems in the MAP/baro circuitLess often
Faulty barometric-pressure sensor (often internal to the PCM)Less often
Restricted intake duct or dirty air filterLess often

How to diagnose & fix

Work through it in order

Read freeze-frame data and compare MAP and baro readings at key-on, engine-off — they should closely match.
Inspect for vacuum leaks and check that the MAP sensor port isn't clogged.
Inspect the MAP sensor connector and wiring for damage or corrosion.
Check the air filter and intake duct for restriction.
Test or replace the MAP sensor if readings are off; clear the code and road-test.

FAQ

Quick answers

Is it safe to drive with P0069?+

Short trips are usually fine, but poor fueling can cause hesitation or stalling. Get it diagnosed promptly to avoid being stranded.

Can I just clear P0069?+

It will reset once the ECM again sees MAP and barometric pressure disagree. Repair the sensor or leak first.

Read & clear P0069 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX