P0108 on Ford: How to Diagnose & Fix
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
1 Ford model · 1 documented issue · 1 critical
P0108 on Ford by model: symptoms, diagnosis and fix
The engine wiring harness splices that feed the Manifold Absolute Pressure (MAP) sensor were crimped with insufficient compression on 2013-2014 Escapes with the 2.0L engine built October 5, 2011 through April 1, 2013. The loose splice sends an incorrect MAP signal to the powertrain control module, and the PCM responds with hesitation, a rough or unstable idle, or an outright stall — often with no stored code that points at the harness, because the sensor itself tests good. Ford recalled the vehicles (along with 2.0L Focus ST) under 14S17 (NHTSA 14V495000), then issued 14S17-S1 (NHTSA 15V813000) for 2013 Escapes built January 11, 2012 through April 1, 2013 and 2013-2014 Focus ST that had been repaired before 14S17 with an earlier procedure that may not have fixed the splices properly. This is an electrical-connection defect and is completely separate from the 1.6L coolant intrusion and cylinder-head cracking issues that dominate this generation, though it affects many of the same cars.
Common Symptoms
- Engine hesitates or bucks under light throttle
- Engine stalls at idle or when coming to a stop
- Rough or hunting idle
- Check engine light with fuel-trim or MAP-related codes, or no code at all
- Symptom is intermittent and worse when the engine is warm
How to Fix
Free recall remedy under NHTSA 14V495000 / Ford 14S17 (and 15V813000 / 14S17-S1) — the dealer cuts out the original crimped splices and installs new splices in the engine wiring harness at no charge. If the car was repaired for this condition before 14S17 was issued, it may still need the 14S17-S1 repair, so check the VIN even on a car with a prior repair logged. If the stall persists after the splice repair, have the MAP sensor and the harness pigtail load-tested with the engine warm rather than replacing the PCM.
Sources for this issue (4)
- NHTSA recall 14V495 — Ford safety recall 14S17 (2013-2014 Escape 2.0L engine wiring splices)recall
- NHTSA recall 15V813 — Part 573 safety recall report, Ford 14S17-S1recall
- Ford Recall 14S17-S1: Engine Wiring Splices May Cause Stall — 2013 Escape (NHTSA 15V813000)article
- TSB v. Recall — 2013+ Ford Escape Forum (fordescape.org)forum
P0108 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0108 mean on a Ford?
P0108 stands for "Manifold Absolute Pressure/Barometric Pressure Circuit High Input." The PCM detects an abnormally high voltage signal from the MAP/BARO sensor circuit, above the expected range for the engine's operating condition. It often means the sensor reports high manifold pressure when the PCM expects low pressure (such as at idle). Symptoms include reduced fuel economy, poor performance, rough running, and an illuminated check engine light. On Ford it is documented across 1 model: Escape.
What are the most common causes of P0108?
The most common causes of P0108 are: Faulty MAP/BARO sensor, Short to voltage in the MAP signal circuit, Disconnected or leaking vacuum supply to the sensor, Wiring or connector damage at the sensor, Restricted exhaust or clogged catalytic converter raising manifold pressure, Failed PCM (rare). The specific cause varies by vehicle.
How much does it cost to fix P0108 on a Ford?
Repair costs vary widely with the root cause and Ford model; each issue on this page carries its own estimate where one is published.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.