P1106moderate severityPowertrain
MAP Sensor Circuit Intermittent High Voltage
on 2011 Chevrolet Express 6.0L V8 Vortec · RWD
What this code means
The PCM detected intermittent high voltage spikes from the Manifold Absolute Pressure sensor circuit. Unlike a steady high voltage (P0108), this code indicates a sporadic connection issue.
Symptoms
- Check Engine Light (intermittent)
- Intermittent rough running
- Hesitation during acceleration
- Poor fuel economy
Common causes
- Loose or corroded MAP sensor connector
- Intermittent wiring fault
- Faulty MAP sensor
- Damaged sensor ground circuit
Diagnostic steps
- Wiggle test MAP sensor connector while monitoring voltage
- Inspect wiring for chafing or damage
- Test MAP sensor output across range
- Check sensor ground circuit
Repair notes
Clean and reseat MAP sensor connector. Repair any damaged wiring. Replace MAP sensor if faulty.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1