What does it mean?
P1102 is a Powertrain (engine, transmission, fuel system) fault code. It indicates: Pressure Sources Switching Solenoid Valve Circuit Malfunction .
MAF Sensor In Range But Lower Than Expected
Severity
Medium
Can I keep driving?
Usually drivable, but get it diagnosed without delay.
First step
A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Check the heater circuit fuse first, free quick check 2. Test heater resistance across the sensor's heater pins, healthy is 5-15 ohms; significantly lower (under 3 ohms) confirms an internal short 3. Disconnect the sensor and check whether the code clears, if it does, the sensor is the fault 4. Inspect wiring back to the ECU for chafing or melted insulation near the exhaust 5. Check the connector for corrosion or moisture that could be bridging pins
- PPowertrain
- 1Manufacturer-specific
- 1Powertrain (Other)
- 02Sequence number
Codes From the Same System
All Fault Codes- P0E00Generator Phase U Current Sensor Circuit
- P0E01Generator Phase U Current Sensor Circuit Range/Performance
- P0E02Generator Phase U Current Sensor Circuit Low
- P0E03Generator Phase U Current Sensor Circuit High
- P0E04Generator Phase V Current Sensor Circuit
- P0E05Generator Phase V Current Sensor Circuit Range/Performance
- P0E06Generator Phase V Current Sensor Circuit Low
- P0E07Generator Phase V Current Sensor Circuit High
Related Similar Codes
- P1100MAF Sensor Intermittent/ Check of all OBDII Systems Not Complete
- P1101MAF Sensor Out Of Self Test Range./KOER Not Able To Complete KOER Aborted
- P1103MAF Sensor In Range But Higher Than Expected
- P1104MAF Sensor Intermittent/ Check of all OBDII Systems Not Complete
- P1105Dual Alternator Upper Fault
- P1106Dual Alternator Lower Fault/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
- P1107Dual Alternator Lower Circuit Malfunction/ Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent Low Voltage
- P1108Dual Alternator Battery Lamp Circuit Malfunction
This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.