P0108 — Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Category: Powertrain Severity: Medium
Updated:
DTC code P0108 means: Manifold Absolute Pressure/Barometric Pressure Circuit High Input. It falls under the "Powertrain" category, with an estimated severity of Medium. Common causes include failed MAP sensor, disconnected vacuum hose and signal wire shorted to voltage; it's worth confirming the diagnosis before replacing parts.
Possible causes
- Failed MAP sensor
- Disconnected vacuum hose
- Signal wire shorted to voltage
- Open sensor ground
Symptoms
- Black smoke
- Higher fuel use
- Rough idle
- Check engine light
How to diagnose it step by step
- Check the vacuum hose.
- Measure sensor ground.
- Check the signal.
- Replace the sensor.
How to fix it
Check the vacuum hose and sensor ground. If everything is fine and the signal is still high, replace the MAP sensor.
Estimated repair cost
MAP sensor: $50–200.
Frequently asked questions
What does DTC code P0108 mean?
Manifold Absolute Pressure/Barometric Pressure Circuit High Input.
Is code P0108 serious?
Severity Medium. Not urgent, but worth diagnosing to avoid bigger damage.
Can I keep driving with code P0108?
You can drive, with higher fuel use.
Related codes
P0107 P0106 P0103 P0102 P0101 P0110 P0112 P0113 P0115 P0116
Refine by car make
🛒 Buy mass air flow sensor (MAF) at Autodoc (affiliate link)