other changes
unchecked B1901 - Maximum Allowed Engine Torque under toque limiting
P1638 Alternator ‘F’ terminal -circuit malfunction Wiring open circuit/short circuit to ground, alternator, ECM
P1638 3 0 Battery light on Message center Not present in 1999
Oxygen sensor
P0137 Heated oxygen sensor (HO2S) 2, bank 1 -low voltage Exhaust leak, wiring short to earth, H025, ECM
P0138 Heated oxygen sensor (HO2S) 2, bank 1 -high voltage Wiring short to positive, H025, ECM
P0139 Heated oxygen sensor (HO2S) 2, bank 1 -slow response Heating inoperative, wiring, H028
P0140 Heated oxygen sensor (HO2S) 2, bank 1 no activity detected Wiring, heating inoperative, H028, ECM
P0141 Heated oxygen sensor (HO2S) 2, bank 1 heater control circuit malfunction Wiring, H025, ECM
P0157 Heated oxygen sensor (HO2S) 2, bank 2 -low voltage Exhaust leak, wiring short to earth, H028, ECM
P0158 Heated oxygen sensor (h025) 2, bank 2, -high voltage Wiring short to positive, HO2S, ECM
P0160 Heated oxygen sensor (H025) 2, bank 2 -no activity detected Wiring, H028, ECM
P0161 Heated oxygen sensor (HO2S) 2, bank 2, heater control -circuit malfunction Wiring, HO2S, ECM
P0167 Heated oxygen sensor (HO2S) 3, bank 2, heater control circuit malfunction Wiring, HO2S, ECM
EVAP
P0442 Evaporative emission (EV AP) system -small leak detected Hose connection(s), intake leak, EVAP canister, EVAP canister purge valve
P0443 Evaporative emission (EVAP) canister purge valve circuit malfunction Wiring, EVAP canister purge valve, ECM
P0444 Evaporative emission (EVAP) canister purge valve open circuit Wiring open circuit, EVAP canister purge valve, ECM
P0446 Evaporative emission (EVAP) system, vent control -circuit malfunction Wiring, EVAP canister purge valve, ECM
P0449 Evaporative emission (EVAP) system, vent valve circuit malfunction Wiring, EVAP canister purge valve, ECM
P0452 Evaporative emission (EVAP) pressure sensor -low input Wiring short to earth, EVAP pressure sensor, ECM
P0453 Evaporative emission (EVAP) pressure sensor high input Wiring short to positive, EVAP pressure sensor, ECM
P1410 Evaporative emission (EVAP) canister purge valve -circuit malfunction Wiring, poor connectios, EVAP canister vent valve, ECM
P1441 Evaporative emission (EVAP) system -leak detected Hose connection(s), EVAP canister, EVAP canister purge valve
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