P0108 on Ford
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0108 on Ford vehicles indicates manifold absolute pressure/barometric pressure circuit high input. Au7o has documented this code across 1 Ford model — most commonly on Escape. 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.
Common Causes of P0108
- •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)
P0108 on Ford by Model
Ford Escape(1 issue)
- Engine Wiring Harness Splice to the MAP Sensor Loses Compression — Hesitation and Stalling (Recalls 14V495 / 15V813, Ford 14S17)2013
The engine wiring harness splices that feed the Manifold Absolute Pressure (MAP) sensor were crimped with insufficient compression on 2013 Escapes built January 11, 2012 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 under 14S17 (NHTSA 14V495000), then had to re-recall them as 14S17-S1 (NHTSA 15V813000) when the first remedy did not hold, extending coverage to 2013-2014 Focus ST as well. 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.
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View P0108 across all makes →Frequently Asked Questions
What does P0108 mean on 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 specifically, this code is documented across 1 model.
What causes P0108 on Ford vehicles?▼
Common causes on Ford: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0108 on a Ford?▼
Repair costs vary widely depending on the root cause and specific Ford model.
Which Ford models have P0108 documented?▼
Au7o has documented P0108 on 1 Ford model: Escape.