I found that a 75 should be an evap leak.here...http://www.nissaninfiniticlub....de+75
Please correct this if Im wrong, Im still waiting on my FSM.
But what is a code 91? These apparantly are OBD-II codes, and I havent been able to find out what they mean
Thanks!!!!
Error Codes 75 and 91 on '96 240
Thanks for the help.... I found out through other channels that a 75 is an evap leak, and a 91 is a primary o2 sensor.
I reset the computer since I think the evap was from the gas cap being partially unscrewed.
The o2 sensor im not sure about. Its weird that the codes were triggered at the same time. Is there any reason for this????
I reset the computer since I think the evap was from the gas cap being partially unscrewed.
The o2 sensor im not sure about. Its weird that the codes were triggered at the same time. Is there any reason for this????
I dont have an OBD scanner, these were from the ecu mode 2. I found the translation here...
http://www.zilvia.net/f/showth...10007
http://www.zilvia.net/f/showth...10007
"ECU = Engine Control Unit
Locations From Jimwolftechnology.com
240SX All D _ 280ZX All A _300ZX to '89 D _300ZX 90+ C _Truck 86+Pathfinder 87-95 E _G20 All B _Q45 All Eng.=D, Trans=A _Sentra/200SX 91+ B _Maxima 89+ B _
How To Reset Your ECU
quote SaintlyCharBoy,May 18 2002,02:46to reset the ecu:1) get at it [editors note: look at quote below to see how to do this]2) (with key at on position but not running) turn the little screw thingy on the back all the way clockwise, the slot will point to a line on the unit wat 2 or more seconds (if you don't wait you'll just get different codes)3) start motor4) turn screw thingy back5) drive car with no blinky or shiny lights
[edit] the battery thing didn't work on my car, neither did repeatedly turning her on and off[/edit]
How To Read the Codes
quote anthony240,May 18 2002,04:57There are 2 screws that hold the ECU in place, one at the top just underneath the bottom of the dash, and the other is beneath the ECU to the side of the panel. Once these are taken off, take the dash screw off (right above the first ECU screw). Lift the dash a little bit while wiggling the ECU out, it's tricky but it'll get out.
Turn the ECU around and get to the back of it, you will see a knob with a notch in it beside a caution sticker. Follow directions above, but if you want to know what threw the code, follow this:
-Turn ignition to on position (where most of the lights are on, brake, airbag, etc)-Turn knob fully clockwise, wait two or more seconds, then turn knob fully counter clockwise-The service engine light will start blinking, count the blinks. The first blinks are slow, this will represent a first digit.-There will be a short pause, then the light will blink fast, these blinks will represent a second digit.-For example, light blinks slow 5 times, and blinks fast 5 times, this is code 55-If there is only one code, the light will just repeat the code over and over. If there are more, the light will also repeat each code one after the other.-Once you know what the problem is (or if it's just general maintenance) fix it, and clear the code by starting the car.
What the Codes MeanFrom ECUtecparts.com
11 Crank angle sensor/circuit (1988 to 1990); Crankshaft position sensor (1991 to 1996) 12 Air flow Meter/circuit open or shorted 13 Cylinder head temperature sensor(Maxima and 300ZX models); all others coolant temperature sensor circuit 14 Vehicle Speed Sensor signal circuit is open 15 Mixture ratio is too lean despite feedback control; fuel injector clogged 21 Ignition signal in the primary circuit is not being entered to the ECU during cranking or tuning 22 Fuel pump circuit (Maxima and 1987 and later 300ZX models); all others idle speed control valve or circuit 23 Idle switch (throttle valve switch) signal circuit open 24 Park/netural switch malfunctioning 25 Idle speed control valve circuit is open or shorted 26 Turbo boost 28 Cooling fan 29 Fuel system rich 31 1984 through 1986 EFI models; Problem in air conditioning system; all other models: ECU internal problem 32 1984 through 1986 EFI models; check starter system. All other models: EGR malfuntion (California models) 33 Oxygen sensor or circuit (300ZX left side) - all other models EGR malfunction 34 Detonation (Knock) sensor 35 Exhaust gas temperature sensor (California models) 36 EGR transducer 37 Closed loop control/front oxygen sensor (Maxima) 41 Maxima and 1984 through 1987 300ZX models; fuel temp sensor circuit. All other models: air temperature sensor circuit 42 1988 and later 300ZX models; fuel temperature sensor circuit; all other models: throttle sensor circuit 43 The mixture ratio is too lean despite feedback control; fuel injector clogged (1987 Sentra only): All others; Throttle position sensor circuit is open or shorted 44 No trouble codes stored in ECU 45 Injector fuel leak (California models only) 51 Fuel injector circuit open (California models only) 53 Oxygen sensor (300ZX right side) 54 Short between automatic transmission control unit(TCU) and ECU 55 Normal engine management system operation is indicated 63 Misfire detected - cylinder no. 6 64 Misfire detected - cylinder no. 5 65 Misfire detected - cylinder no. 4 66 Misfire detected - cylinder no. 3 67 Misfire detected - cylinder no. 2 68 Misfire detected - cylinder no. 1 71 Misfire detected - random 72 Catalytic converter malfunction (right side) 74 EVAP pressure sensor 75 EVAP leak 76 Fuel injection system 77 Rear oxygen sensor 81 Vacuum cut bypass valve 82 Crankshaft sensor 84 Automatic trans-to-fuel injection communication 85 VTC solenoid 87 EVAP canister purge control 91 Front oxygen sensor 95 Crankshaft sensor 98 Coolant temperature sensor 101 Camshaft sensor 103 Park/neutral switch 105 EGR and canister control valve 108 EVAP volume control
__________________Gone"
Quoted from the zilvia forum link shown above
Locations From Jimwolftechnology.com
240SX All D _ 280ZX All A _300ZX to '89 D _300ZX 90+ C _Truck 86+Pathfinder 87-95 E _G20 All B _Q45 All Eng.=D, Trans=A _Sentra/200SX 91+ B _Maxima 89+ B _
How To Reset Your ECU
quote SaintlyCharBoy,May 18 2002,02:46to reset the ecu:1) get at it [editors note: look at quote below to see how to do this]2) (with key at on position but not running) turn the little screw thingy on the back all the way clockwise, the slot will point to a line on the unit wat 2 or more seconds (if you don't wait you'll just get different codes)3) start motor4) turn screw thingy back5) drive car with no blinky or shiny lights
[edit] the battery thing didn't work on my car, neither did repeatedly turning her on and off[/edit]
How To Read the Codes
quote anthony240,May 18 2002,04:57There are 2 screws that hold the ECU in place, one at the top just underneath the bottom of the dash, and the other is beneath the ECU to the side of the panel. Once these are taken off, take the dash screw off (right above the first ECU screw). Lift the dash a little bit while wiggling the ECU out, it's tricky but it'll get out.
Turn the ECU around and get to the back of it, you will see a knob with a notch in it beside a caution sticker. Follow directions above, but if you want to know what threw the code, follow this:
-Turn ignition to on position (where most of the lights are on, brake, airbag, etc)-Turn knob fully clockwise, wait two or more seconds, then turn knob fully counter clockwise-The service engine light will start blinking, count the blinks. The first blinks are slow, this will represent a first digit.-There will be a short pause, then the light will blink fast, these blinks will represent a second digit.-For example, light blinks slow 5 times, and blinks fast 5 times, this is code 55-If there is only one code, the light will just repeat the code over and over. If there are more, the light will also repeat each code one after the other.-Once you know what the problem is (or if it's just general maintenance) fix it, and clear the code by starting the car.
What the Codes MeanFrom ECUtecparts.com
11 Crank angle sensor/circuit (1988 to 1990); Crankshaft position sensor (1991 to 1996) 12 Air flow Meter/circuit open or shorted 13 Cylinder head temperature sensor(Maxima and 300ZX models); all others coolant temperature sensor circuit 14 Vehicle Speed Sensor signal circuit is open 15 Mixture ratio is too lean despite feedback control; fuel injector clogged 21 Ignition signal in the primary circuit is not being entered to the ECU during cranking or tuning 22 Fuel pump circuit (Maxima and 1987 and later 300ZX models); all others idle speed control valve or circuit 23 Idle switch (throttle valve switch) signal circuit open 24 Park/netural switch malfunctioning 25 Idle speed control valve circuit is open or shorted 26 Turbo boost 28 Cooling fan 29 Fuel system rich 31 1984 through 1986 EFI models; Problem in air conditioning system; all other models: ECU internal problem 32 1984 through 1986 EFI models; check starter system. All other models: EGR malfuntion (California models) 33 Oxygen sensor or circuit (300ZX left side) - all other models EGR malfunction 34 Detonation (Knock) sensor 35 Exhaust gas temperature sensor (California models) 36 EGR transducer 37 Closed loop control/front oxygen sensor (Maxima) 41 Maxima and 1984 through 1987 300ZX models; fuel temp sensor circuit. All other models: air temperature sensor circuit 42 1988 and later 300ZX models; fuel temperature sensor circuit; all other models: throttle sensor circuit 43 The mixture ratio is too lean despite feedback control; fuel injector clogged (1987 Sentra only): All others; Throttle position sensor circuit is open or shorted 44 No trouble codes stored in ECU 45 Injector fuel leak (California models only) 51 Fuel injector circuit open (California models only) 53 Oxygen sensor (300ZX right side) 54 Short between automatic transmission control unit(TCU) and ECU 55 Normal engine management system operation is indicated 63 Misfire detected - cylinder no. 6 64 Misfire detected - cylinder no. 5 65 Misfire detected - cylinder no. 4 66 Misfire detected - cylinder no. 3 67 Misfire detected - cylinder no. 2 68 Misfire detected - cylinder no. 1 71 Misfire detected - random 72 Catalytic converter malfunction (right side) 74 EVAP pressure sensor 75 EVAP leak 76 Fuel injection system 77 Rear oxygen sensor 81 Vacuum cut bypass valve 82 Crankshaft sensor 84 Automatic trans-to-fuel injection communication 85 VTC solenoid 87 EVAP canister purge control 91 Front oxygen sensor 95 Crankshaft sensor 98 Coolant temperature sensor 101 Camshaft sensor 103 Park/neutral switch 105 EGR and canister control valve 108 EVAP volume control
__________________Gone"
Quoted from the zilvia forum link shown above