Result:

p1491

Acura
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Exhaust gas recirculation (EGR) system - valve lift insufficient
Cause:
    Wiring, EGR valve/position sensor, EGR solenoid, hose leak/blockage, ECM

Chrysler
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Radiator Fan Relay Circuit Conditions
Cause:
    Key on or engine running, system voltage over 10v, fan relay commanded on, then the PCM detected a shorted or open condition in the relay control circuit. Test the fan relay resistance (it should be 30-70 ohms). Refer to code repair chart in other manuals or media.

Honda
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Exhaust gas recirculation (EGR) system - valve lift insufficient
Cause:
    Wiring, EGR valve/position sensor, ECM

Infiniti
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Evaporative emission (EVAP) canister purge control system - malfunction
Cause:
    Wiring, EVAP valve, ECM

Isuzu
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Exhaust gas recirculation (EGR) system - valve lift insufficient
Cause:
    Wiring, EGR valve/position sensor, EGR solenoid, hose leak/blockage, ECM

Mercedes-Benz
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    AC system - pressure too high
Cause:
    AC control module trouble code(s) stored

Nissan
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Evaporative emission (EVAP) canister purge system - bypass vacuum valve malfunction
Cause:
    Wiring, EVAP vacuum cut/bypass valve, hose leak/blockage, EVAP pressure sensor/vent valve, EVAP canister contaminated, ECM

Saab
Type:
    Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description:
    Evaporative emission (EVAP) pressure sensor/ fuel tank level sensor, in fuel tank - range/ performance problem/malfunction
Cause:
    Wiring, connector(s), EVAP pressure sensor, fuel tank level sensor

Look for code