Toyota OBD/OBD2 Codes >> Toyota Celica 94-95 & Corolla 93-95

Preparatory Conditions

  • Battery voltage 11 Volt minimum
  • Closed throttle position (CTP) switch full closed
  • Transmission in neutral position
  • All auxiliary equipment, including air conditioning, switched OFF
  • Engine at normal operating temperature
Corollla 94-95 Checking Codes Celica 94-95 Checking Codes

Accessing Trouble Codes

Self-Diagnosis – Normal Mode
  • Switch ignition ON. Do NOT start engine.
  • Check MIL illuminates
  • Switch ignition OFF
  • Corolla – jump DLC terminals TE1 and E1 with a short lead 1
  • Celica – jump DLC terminals TE1 and E1 with a short lead 2
  • Switch ignition ON
  • Count MIL flashes and compare with trouble code table below
  • First flashes of .5 second duration indicate ‘tens’, after a 1.5 second pause, next flashes of .5 second duration indicate ‘units’
  • A 2.5 second pause occurs between codes
  • After a 4.5 second pause, trouble codes will be repeated
  • Switch ignition OFF
  • Remove jump lead
Self-Diagnosis – Test Mode
  • Carry out preparatory conditions
  • Corolla – jump DLC terminals TE2 and E1 with a short lead 1
  • Celica – jump DLC terminals TE2 and E1 with a short lead 2
  • Switch ignition ON. Do NOT start engine
  • Check MIL is flashing to confirm test mode is operating
  • NOTE: Test mode will not be activated if the DLC terminals are connected after the ignition switch is turned ON.
  • Start the engine
  • Drive vehicle over 10 mph to simulate possible fault conditions
  • Stop vehicle
  • Jump DLC terminals TE1 and E1 with a short lead 1 or 2
  • Count MIL flashes and compare with trouble code table below
  • Switch ignition OFF
  • Remove jump leads
Corolla 94-95 Erasing Codes Celica 94-95 Erasing Codes

Clearing Trouble Codes

  • Ensure ignition switched OFF
  • Corolla – remove EFI fuse (15A) from underhood fusebox 5
  • Celica – remove EFI fuse (15A) from underhood fusebox 6
  • Wait 30 seconds
  • Reinstall fuse
  • Repeat accessing procedure to ensure no data remains in ECM fault memory

 Trouble Codes

94-95 Celica 1.8L Engine Code: 7A-FE
94-95 Celica 2.2L Engine Code: 5S-FE
93-95 Corolla 1.6L Engine Code: 4A-FE
93-95 Celica 1.8L Engine Code: 7A-FE
Trouble code Fault location Probable cause
12 Engine speed (RPM) sensor -circuit Wiring, RPM sensor, ECM
13 Engine speed (RPM) sensor -above 1500 rpm Wiring, RPM sensor, ECM
14 Ignition reference signal -no signal Wiring, ignition module, ECM
16 Transmission control signal -malfunction EGM
21 Heated oxygen sensor (H02S) -front circuit Wiring, H02S, ECM
22 Engine coolant temperature (ECT) sensor -circuit Wiring, ECT sensor, ECM
24 lntake air temperature (lAT) sensor -circuit Wiring, lAT sensor, ECM
25 Mixture control -continuously lean Wiring, injector, H02S, intake/fuel ignition system, valve timing, ECM
26 Mixture control -continuously rich Wiring, injector, intake/fuel system, valve timing, ECM
27 Heated oxygen sensor (H02S)-rear-circuit Wiring, H02S, ECM
31 Manifold absolute pressure (MAP) sensor -circuit Wiring, MAP sensor, ECM
41 Throttle position (TP) sensor -circuit Wiring, TP sensor, ECM
42 Vehicle speed sensor (VSS) -circuit Wiring, VSS, instrument c/uster, ECM
43 Starter signal -circuit Wiring, ignition switch, engine control relay, ECM
51 Switch signal -A/C switch ON during diagnosis Wiring, A/C switch, A/C amplifier, ECM
51 Switch signal -closed throttle position (CTP) switch OFF during diagnosis Wiring, CTP switch, ECM
51 Switch signal-park/neutra! position (PNP) switch not in P or N during diagnosis Wiring, PNP switch, ECM
52 Knock sensor (KS) -circuit Wiring, KS, ECM
71 Exhaust gas recirculation (EGR) system malfunction Hose leak/blockage, wiring, EGRT sensor, EGR solenoid, ECM

6 Replies to “Toyota Celica 94-95 & Corolla 93-95”

  1. I am looking specific for the list of codes for a 93 Corolla 1.8 liter engine. You have a 1.6 listed and the celica’s listed but not the 1.8. Is the list for the Celicas and the 1.6 liter Corolla applicable for the 1.8 liter?

  2. What does code 33 on a 1999 toyota corolla ae110 sprinter mean? It’s not in the list and mine displays it?

  3. Awesome awesome awesome
    My baby ( 95 covertible) just choked and died on the highway.
    Because of this page, I should be able to figure out why. Therefore I should be able to fix it.
    Saving me dude! Best wishes brother!

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