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 codeFault locationProbable cause
12Engine speed (RPM) sensor -circuitWiring, RPM sensor, ECM
13Engine speed (RPM) sensor -above 1500 rpmWiring, RPM sensor, ECM
14Ignition reference signal -no signalWiring, ignition module, ECM
16Transmission control signal -malfunctionEGM
21Heated oxygen sensor (H02S) -front circuitWiring, H02S, ECM
22Engine coolant temperature (ECT) sensor -circuitWiring, ECT sensor, ECM
24lntake air temperature (lAT) sensor -circuitWiring, lAT sensor, ECM
25Mixture control -continuously leanWiring, injector, H02S, intake/fuel ignition system, valve timing, ECM
26Mixture control -continuously richWiring, injector, intake/fuel system, valve timing, ECM
27Heated oxygen sensor (H02S)-rear-circuitWiring, H02S, ECM
31Manifold absolute pressure (MAP) sensor -circuitWiring, MAP sensor, ECM
41Throttle position (TP) sensor -circuitWiring, TP sensor, ECM
42Vehicle speed sensor (VSS) -circuitWiring, VSS, instrument c/uster, ECM
43Starter signal -circuitWiring, ignition switch, engine control relay, ECM
51Switch signal -A/C switch ON during diagnosisWiring, A/C switch, A/C amplifier, ECM
51Switch signal -closed throttle position (CTP) switch OFF during diagnosisWiring, CTP switch, ECM
51Switch signal-park/neutra! position (PNP) switch not in P or N during diagnosisWiring, PNP switch, ECM
52Knock sensor (KS) -circuitWiring, KS, ECM
71Exhaust gas recirculation (EGR) system malfunctionHose leak/blockage, wiring, EGRT sensor, EGR solenoid, ECM
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Hilmi Ahmad
Hilmi Ahmad
6 months ago

Hello im looking for Toyota Corona 7afe 1.8 AT211 trouble codes

Hakon J Gjessing
7 months ago

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!

Kennedy Micheni
Kennedy Micheni
1 year ago

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

Bobby Holmes
Bobby Holmes
1 year ago

Wow, this page has been so helpful for me .

Grant Wiegert
2 years ago

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?