P1102 MERCURY Possible Causes
- Faulty mass air flow sensor
- Air leak before or after the sensor
- Mass air flow sensor harness is open or shorted
- Poor electrical connection in the mass air flow sensor circuit
How to Fix P1102 MERCURY Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding cable harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
The Engine Control Module (ECM) detected a mass air flow sensor (MAF) signal below the calibrated limit
Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P1102 MERCURY Meaning
The mass air flow (MAF sensor circuit is monitored by the Powertrain Control Module (PCM) for an out-of-range air flow (or voltage) input. If during engine startup, the air flow voltage signal is above 0.27 volts, the test fails. Similarly, if while the engine is running, an air flow voltage signal is not between 0.46 volts and 2.44 volts, the test fails.