P1408moderate severityPowertrain
Intake Manifold Pressure Sensor Circuit
on 2023 Chevrolet Bolt EUV 65 kWh Single Motor FWD · FWD
What this code means
The PCM detects a fault in the intake manifold pressure sensor circuit. Similar to MAP sensor code P0107, this affects load and fuel calculations.
Symptoms
- Check engine light on
- Poor fuel economy
- Hesitation or stalling
Common causes
- Faulty MAP sensor
- Damaged sensor wiring
- Vacuum leak at sensor
- Corroded connector
Diagnostic steps
- Scan for stored codes
- Monitor MAP sensor readings
- Inspect sensor and vacuum connection
- Test sensor reference and signal circuits
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Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control