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P1173 Diagnostic Trouble Code Discussion for March 2015

Electronic Throttle System Rationality

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Trouble Ticket Help Requests for DTC P1173
Help Request Posted
2005 Land Rover Range Rover HSE 4.4L MIL Lamp on VIN: SALME11465
P1173: O2 Sensor Fault Aging downstream fuel trim B2. Not sure what the description for P1173 & P1170 are. I get different descriptions depending on what scan tool or who you talk to. I think there upstream fuel trim faults?
March 12, 2015