P1100moderate severityPowertrain
MAP Sensor Circuit Malfunction
on 2011 Kia Optima 2.4L I4 · FWD
What this code means
The PCM has detected a malfunction in the Manifold Absolute Pressure sensor circuit. The MAP sensor signal is outside the expected voltage range or is not correlating with other engine sensor inputs.
Symptoms
- Check Engine Light
- Poor engine performance
- Rough idle
- Black smoke from exhaust
- Poor fuel economy
Common causes
- Faulty MAP sensor
- Vacuum hose to MAP sensor disconnected or leaking
- Wiring open or short in MAP circuit
- Corroded MAP sensor connector
- PCM 5V reference voltage issue
Diagnostic steps
- Check MAP sensor voltage at key-on engine-off (should read near barometric pressure)
- Inspect vacuum hose to MAP sensor
- Test MAP sensor with hand vacuum pump
- Check 5V reference and ground circuits
- Inspect MAP sensor connector for corrosion
Repair notes
Replace the MAP sensor if it does not respond correctly to vacuum changes.
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Bluetooth code reader (~$25)
Veepeak OBDCheck BLE →
Pairs with your phone — reads and clears codes, live data.
Serious DIY (~$100)
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
Shop-grade tablet (~$300+)
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
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