Just saw this on the Maxima forum - May be of some help!

I know that some of you have had some strange codes before now that have not been in any Z32 write-ups. Here are the maxima's with some of the Z32's.

This table may be used as a reference for interpreting your Nissan vehicle's computer messages.

If codes other than these are indicated, repeat self-diagnosis. If codes reappear, substitute a known good ECM, and recheck codes.

CODE PROBABLE CAUSE for Nissan vehicles 1984 and later.

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

Disclaimer:

Use this as a guide, not a Bible. These codes are assumed current through 1997. No warranties or guarantees as to correctness or fitness for use is stated or may be implied.