Possible causes – Leaking injector or regulator– Engine ignition misfire– Engine mechanical condition– Faulty HO2S– HO2S Sensor 2 harness is open or shorted– HO2S Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning

Possible causes – Low engine oil pressure or level– Open or short circuit condition– Faulty VTEC oil pressure switch– Faulty VTEC solenoid When is the code detected? The P1259 is set when there is a problem in the VTEC Oil

Possible causes – Open or short circuit condition – Poor electrical connection – Faulty ignition coil – Faulty ION sensor module Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1340 ISUZU Description ION Sensing Module Cylinder ID

Possible causes – Plugged air intake or exhaust– Plugged fuel filter– Fuel pump failure– Injector failure Symptoms – Engine Light ON (or Service Engine Soon Warning Light) ISUZU Technical Service Bulletins for P1171 code 1998 ISUZU RODEO ENGINE AND ENGINE

Possible causes – Short in Air Pump circuit– Air pump assembly– Faulty Pressure Sensor– Pressure Sensor harness is open or shorted– Pressure Sensor circuit poor electrical connection When is the code detected? If the pressure level from the sensor has

Possible causes – Trailer towing may set code– Check transmission fluid level– Internal transmission fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1870 ISUZU Description Transmission is in 4th gear with Torque Converter Clutch (TCC) engaged