Toyota OBD/OBD2 Codes >> Toyota Camry Celica Corolla MR2

Accessing Trouble Codes

  • Switch ignition ON. Do NOT start engine.
  • Corolla – jump data link connector (DLC) terminals T and E1 with a short lead 1
  • Camry – jump DLC terminals T and E1 with a short lead 2
  • MR2 – jump DLC terminals T and E1 with a short lead 3
  • Celica – jump DLC terminals T and E1 with a short lead 4
  • 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
  • NOTE: The MIL flashes once every 0.25 seconds if the system is correct
  • Switch ignition OFF
  • Remove jump lead

Clearing Trouble Codes

  • After the faults have been rectified, erase the trouble codes as follows:
  • Corolla – remove STOP fuse (15A) from LH kick panel fusebox for 10 seconds minimum 7
  • Camry – remove EFI fuse (15A) from underhood fusebox for 10 seconds minimum 8
  • MR2 – remove AM2 fuse (7.5A) from No.2 underhood fusebox for 10 seconds minimum 9
  • Celica – remove EFI fuse (15A) from underhood fusebox for 10 seconds minimum 10
  • Reinstall fuse
  • Repeat accessing procedure to ensure no data remains in ECM fault memory
1987-91 Camry  2.0/2.5 L Engine Code: 3S-FE/2VZ-FE
1986-89 Celica  2.0 L Engine Code: 3S-GE/FE/GTE
1988-91 Corolla  1.6 L Engine Code: 4A-GE
1988-90 MR2 1.6 L/Supercharged Engine Code: 4A-GE/GZE
Trouble code Fault location Probable cause
11 Engine control module (ECM) power supply Wiring, ignition switch, engine control relay, ECM
12 Engine speed (RPM) sensor -circuit Wiring, RPM sensor, ECM
13 Engine speed (RPM) sensor -above 1000 rpm Wiring, RPM sensor, ECM
14 Ignition reference signal -no signal Wiring, ignition module/coi/, ECM
16 Transmission control signal Wiring, ECM, TCM
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, IAT sensor, ECM
25 Mixture control -continuously lean Wiring, injector, H02S, ECTNAF sensor, intake fuel/ignition system, ECM
26 Mixture control -continuously rich Wiring, injector, fuel system, cold start injector, H02S, ECTNAF sensor, ECM
27 Heated oxygen sensor (H02S) -rear-circuit Wiring, H02S, ECM
31 Volume air flow (VAF) sensor-circuit Wiring, VAF sensor, ECM
32 Volume air flow (VAF) sensor-circuit Wiring, VAF sensor, ECM
34 Turbocharger (TC) wastegate pressure sensor high pressure TC wastegate/pressure sensor, wiring, ECM
35 Turbocharger (TC) wastegate pressure sensor circuit Wiring, TC wastegate pressure sensor, ECM
41 Throttle position (TP) sensor-circuit Wiring, TP sensor, ECM
42 Vehicle speed sensor (VSS) -circuit Wiring, VSS, ECM
43 Starter signal -circuit Wiring, ignition switch, 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
53 Knock control -malfunction ECM
54 Turbocharger (TC) intercooler control module low coolant level coolant level/sensor, wiring, intercooler control module, ECM .
54 Turbocharger (TC) intercooler control module coolant pump motor intercooler coolant circuitlwater pump
71 Exhaust gas recirculation (EGR) system -malfunction Hose leak/blockage, wiring, EGRT sensor, EGR solenoid, ECM

One Reply to “Toyota Camry Celica Corolla MR2”

  1. I have a 95 Toyota Camry LE it has the 6 cylinder 3.0 I tried jumping te1 and E1 under the hood and diagnostic you want is a ground but I found out on the left hand side of the steering wheel behind the change Trey is an OBD Port take me to O’Reilly’s it said it was took 8 minutes to read it and then after that it told me to turn the air conditioner off turn the car on Let It idle till the car got hot make sure the emergency parking brake was on and then turn the car off and then and then you go to get the codes and it says you have to wait 8 minutes I waited 8 minutes again and then it said to do the whole turn the air conditioner off let it idle until it gets hot make sure the emergency brakes on turn the key off and on excetera excetera it just says keep doing the same thing and it never gives me codes do you have to go through this whole process for five times to get the codes or is there something else going on here after two times I gave up and stopped shouldn’t take half an hour to get codes but I don’t know if anybody has any insight please let me know

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