P0107 — Manifold Absolute Pressure/Barometric Pressure Circuit Low — 6.7 Powerstroke
Diagnostic reference for 6.7L Power Stroke (2011–present) P0107.
What it means
The PCM sees the MAP/BARO sensor signal below the valid range. On this platform the code is tied to the MAP sensor, its connector, or wiring and can affect boost control.1
Most likely causes
- MAP sensor internal failure or out-of-range output — The MAP/BARO sensor signal is below the valid range, which the generic definition describes as a low circuit signal.1
- MAP sensor connector corrosion, loose pins, or wiring damage — Typical on this platform is MAP sensor, connector, or wiring issues affecting boost control.1
- Boost-control-related intake leaks affecting MAP reading — The code affects intake, sensors, and boost control; underboost conditions on this platform are commonly linked to charge-air leaks and VGT/actuator issues.12
How to diagnose
- Verify freeze-frame conditions and confirm P0107 is present with no other codes that would explain a low MAP reading.
- Inspect MAP sensor and its connector for corrosion, moisture, bent pins, and secure seating; check wiring for chafing, heat damage, or opens.
- With key on engine off, check MAP sensor reference voltage and ground per service information; compare MAP signal voltage to barometric pressure expectations.
- Command or monitor boost and compare MAP readings to expected values under light load; look for implausible low readings consistent with a low circuit signal.
- Inspect intake tract, charge-air cooler boots, and intercooler connections for leaks that can influence MAP readings and boost control.
Common mistake to avoid
Replacing the turbo before smoke-testing the intake. Boost leaks at intercooler boots, end tanks and clamps are a common cause of low power and underboost codes, and they mimic a failing turbo. Source: BD Diesel — 6.7L Power Stroke problems and real fixes.
Parts and tools you may need
- Digital multimeter
- Scan tool with live data
- Basic hand tools for sensor removal
- Dielectric grease
- Replacement MAP sensor (if testing indicates failure)
Tools you’ll need
- digital multimeter — Checks MAP sensor reference voltage, ground continuity, and signal voltage against barometric expectations to confirm a low circuit.
- OBD-II scan tool — Reads P0107, freeze-frame data, and live MAP/BARO values to verify implausibly low readings and monitor boost response.
- inspection mirror and flashlight — Exposes MAP sensor connector corrosion, pin damage, and wiring chafing in tight intake areas.
- smoke machine — Detects intake/charge-air leaks that can cause low MAP readings and affect boost control.
Rough cost and difficulty
| Likely repair | Parts | Shop labor | Who usually does it |
|---|---|---|---|
| Wiring or connector repair | $10–$100 | 1–4 hrs | DIY with tools and a manual |
| MAP/boost pressure sensor | $40–$200 | 0.3–1 hrs | Easy DIY |
| Intercooler boot, clamp or pipe repair | $20–$200 | 0.5–2 hrs | Easy DIY |
Typical US independent-shop figures; labor runs about $120–$180 per hour (dealers charge more). Confirm the diagnosis before buying parts.
When to see a pro
If wiring faults are found in harnesses, or if MAP readings remain implausible after sensor/connector service, have a qualified diesel technician perform pinpoint electrical tests and verify PCM inputs. Do not attempt step-by-step repair of safety-critical systems.
Check for recalls
Recalls are tied to your truck’s VIN, so check yours directly: enter the VIN at NHTSA’s recall lookup. Open safety recalls are repaired free at a dealer.
Sources
Repair videos: P0107 on the 6.7 Power Stroke
Third-party videos, not ours — picked for this engine. Confirm anything against the factory service information for your truck.
Spotted an error, or something missing? Tell us
Run a 6.7 Powerstroke? This goes straight to the editor — it is not published.