Nissan Nissan Altima Sentra Stanza 240SX Trouble Code Info

Nissan

General Information

  • Engine control module (ECM) incorporates self-diagnosis function
  • Malfunction indicator lamp (MIL) will illuminate if certain faults are recorded
  • ECM operates in backup mode if sensors fail, to enable vehicle to be driven to workshop
  • Trouble codes can be displayed by the red LED (see Image # 3; callout 1) in the engine control module (ECM) and the MIL lamp in diagnostic mode 2, or using a suitable code reader
Altima Sentra Stanza 240SX 91-94 Checking Codes 3

Accessing Trouble Codes

Self-Diagnosis – Mode 1
  • Access engine control module (ECM):
    • Except 240SX – center fascia – 1
    • 240SX – RH kick panel – 2
  • Switch ignition ON
  • Check MIL and red LED in ECM  illuminate
  • Start engine.  Allow to idle
  • If MIL and LED extinguish, no trouble codes have been recorded
  • If MIL and LED remain illuminated, access trouble codes
Altima Sentra Stanza 240SX 91-94 Checking Codes 1 Altima Sentra Stanza 240SX 91-94 Checking Codes 2 Self-Diagnosis – Mode 2
  • Switch ignition ON. Do NOT start engine.
  • Turn diagnostic mode selector on ECM fully clockwise  (see Image # 3; callout 2
  • Wait at least 2 seconds
  • Turn diagnostic mode selector on ECM fully counterclockwise  (see Image # 3; callout 2)
  • Self-diagnosis now in Mode 2
  • MIL and red LED in ECM should flash
  • Count flashes and compare with trouble code table below.
    • Long flashes indicate the ‘tens’ of the trouble code
    • Short flashes indicate the ‘units’ of the trouble code
    • A short pause separates each flash
    • A long pause separates each trouble code
  • Switch ignition OFF
  • Self-diagnosis will return to Mode 1

Clearing Trouble Codes

  • Switch ignition ON. Do NOT start engine
  • Turn diagnostic mode selector on ECM fully clockwise
  • Wait at least 2 seconds
  • Turn diagnostic mode selector on ECM fully counterclockwise
  • Self-diagnosis now in Mode 2
  • Turn diagnostic mode selector on ECM fully clockwise
  • Wait at least 2 seconds
  • Turn diagnostic mode selector on ECM fully counterclockwise
  • Self-diagnosis will return to Mode 1
  • Trouble codes now erased
  • Switch ignition OFF

 Trouble Codes

 
93-94 Altima 2.4L Engine Code: KA24DE
91-94 Sentra/NX 1.6L Engine Code: GA16DE
91-94 Sentra/NX 2.0L Engine Code: SR20DE
90-92 Stanza 2.4L Engine Code: KA24E
91-94 240SX 2.4L Engine Code: KA24DE
Trouble code Fault location Probable cause
11 Crankshaft position (CKP) sensor circuit malfunction Wiring, CKP sensor, ECM
12 Mass air flow (MAF) sensor -range/ performance problem Wiring, MAF sensor, ECM
13 Engine coolant temperature (ECT) sensor range/performance problem Wiring, ECT sensor, ECM
14 Vehicle speed sensor (VSS) -malfunction Wiring, VSS, ECM
21 Ignition coil -no primary signal Wiring, ignition coil!module, ignition system, ECM
31 Engine control module (ECM) -malfunction ECM
32 Exhaust gas recirculation (EGR) system -control valve malfunction Wiring, hose leak/blockage, EGR cut OFF solenoid, ECM
33 Heated oxygen sensor (H02S) -circuit malfunction Wiring, H02S, intake/fuel system, injector, ECM
34 Knock sensor (KS) -circuit malfunction Wiring, KS, ECM
35 Exhaust gas recirculation temperature (EGRT) sensor-circuit malfunction Wiring, EGRT sensor, ECM
41 lntake air temperature (lAT) sensor circuit malfunction Wiring, IAT sensor, ECM
43 Throttle position (TP) sensor -circuit malfunction Wiring, TP sensor, ECM
45 Injector leak -malfunction lnjector, fuel system, ECM
54 ECM/TCM -communication malfunction Wiring, ECM, TCM
55 No faults detected