3450e3f2__WJ___Diagnostic_Trouble_Codes__ion_of_Diagnostic_Trouble_Code
[Scan Code] P0172 (M) [DRB Scan Tool Display] System too Rich (Bank 1)
A rich air/fuel mixture has been indicated by an abnormally lean correction factor. Was the fuel pressure checked with a DRBIII pressure transducer? Is the fuel pressure within specification with engine running at normal operating temperature? Verify the correct DRBIII PEP module pressure transducer is being used It is critical when reading pressures with the DRBIII PEP module pressure transducers that the proper transducer is being used. A too high of value transducer will cause inaccurate readings. It is also critical that the DRBIII and pressure transducer is zeroed out before taking a reading.Repair or replace any fuel system malfunctioning components.
Jeep Grand Cherokee WJ - Diagnostic Trouble Codes
Description of Diagnostic Trouble Code