P1169 MERCURY Possible Causes
- Faulty fuel rail sensor
- Fuel rail sensor harness is open or shorted
- Poor electrical connection in the fuel rail sensor circuit
How to Fix P1169 MERCURY Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1169 MERCURY Meaning
The Component Comprehensive Monitor (CCM) monitors the fuel rail pressure (FRP) for acceptable fuel pressure. The Engine Control Module (ECM) detected that the fuel pressure was high for the operating condition. The test fails when the fuel pressure falls below or exceeds a calibrated minimum/maximum value during a calibrated period.