TORQDEX // POWERTRAIN DTC
Manifold Absolute Pressure / Barometric Pressure Circuit High Input
The MAP or barometric-pressure sensor signal is above the expected electrical range.
00 // CODE DEFINITION
What P0108 means
P0108 indicates that the manifold or barometric-pressure signal voltage is higher than expected.
A signal short to voltage, open ground, sensor failure, or connector fault may cause the condition.
01 // COMMON SYMPTOMS
What you may notice
02 // COMMON CAUSES
What can trigger P0108?
Pressure sensor fault
The sensor may produce an excessively high signal.
Signal short to voltage
Damaged wiring may raise the sensor output.
Sensor ground fault
A poor ground can distort the signal.
03 // DRIVEABILITY
Can I keep driving with P0108?
The vehicle may remain driveable depending on the symptoms. Diagnose the fault soon, especially if performance, fuel economy, starting, shifting, or engine operation has changed.
04 // DIAGNOSTIC ORDER
Start here
Review live MAP data
Look for a reading that is fixed or implausibly high.
Inspect sensor circuits
Check reference, ground, and signal wiring.
Check connector terminals
Look for corrosion or spread terminals.
Test sensor response
Verify pressure changes produce an appropriate signal change.
05 // COMMON REPAIR AREAS
Systems commonly involved
These are common areas associated with P0108. Testing should confirm the actual fault before parts are replaced.
Pressure sensor fault
The sensor may produce an excessively high signal.
Signal short to voltage
Damaged wiring may raise the sensor output.
Sensor ground fault
A poor ground can distort the signal.
06 // DIAGNOSTIC PRINCIPLE
Confirm the fault before replacing parts
P0108 identifies a condition detected by the vehicle control system. It does not automatically identify one failed component. Test the affected system before replacing parts.
07 // RELATED TORQDEX DIAGNOSTICS
Related diagnostic guides
Continue troubleshooting by symptom and system. These TorqDex guides cover common diagnostic paths associated with this trouble code.
08 // RELATED CODES