[The Camry Man]

Toyota OBD I Diagnostic Trouble Codes

by "THE CAMRY MAN"


OBD diagnostic does not have to be difficult or inconclusive.

On this OBD diagnostic pagefor Toyota vehicles we show you how to get the codes without special tools, explain the meaning of the codes on different systems and identify which system is not functioning
properly.

This information can help you fix the vehicle right the first time if you follow

proper testing procedures.



This is not meant to be a substitute for information and

specifications in the factory service manuals or the product service training manuals. If

you appreciate what is here for you, then just imagine how much more accurate and easier the repair will be with information from the product service training manuals.


Code Model Description / Probable Cause
==========================================================
12 Camry Corolla RPM Signal / Distributor or Circuit, ECM
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13 Camry Corolla RPM Signal / Distributor or Circuit, ECM
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14 Camry Corolla Ignition Signal / Ignitor or Circuit to ECM. ECM
==========================================================
16(1.8L) Corolla Electronic
Controlled A/T
Signal / ECM or Circuit
==========================================================
21(2.2L) Camry Corolla HO2S Sensor
Signal / O2 Sensor or Circuit, ECM
==========================================================
21(3.0L) Camry HO2S Sensor
Signal / Left O2 Sensor or Circuit, ECM
==========================================================
22 Camry Corolla Coolant Temp.
Sensor (CTS)Signal / Coolant Temp. Sensor or Circuit, ECM
==========================================================
24 Camry Corolla Intake Air
Temp. (IAT) Sensor
Signal / Intake Air Temp. Sensor or Circuit, ECM
==========================================================
25 Camry Corolla Lean Air/Fuel
Mixture / Loose Ground, Injector or Circuit, Fuel Pressure, Ignition
System, Coolant Temp. Sensor (CTS),Airflow Meter (MAF),
Vacuum Sensor (MAP), HO2s Sensor or Circuit, CompressionPressure, ECM
==========================================================
26 Camry Corolla Rich Air/Fuel
Mixture / Loose Ground, Injector or Circuit, Fuel Pressure, Ignition
System, Coolant Temp. Sensor (CTS),Airflow Meter (MAF),
Vacuum Sensor (MAP), HO2s Sensor or Circuit, Cold Start Injector
or Circuit,CompressionPressure, ECM
==========================================================
27 Camry Corolla Sub-O2 Sensor
Signal / Sub-O2 Sensor or Circuit, ECM
==========================================================
28(3.0L) Camry Right HO2S
Sensor Signal / Right O2 Sensor or Circuit, ECMl
==========================================================
31(2.2L) Camry Corolla Vacuum Sensor (MAP)
Signal / Vacuum Sensor or Circuit, ECM
==========================================================
31(3.0L) Camry Airflow Meter (MAF) / Airflow Meter or Circuit, ECM
==========================================================
32(3.0L) Camry Airflow Airflow Meter (MAF) / Airflow Meter or Circuit, ECMMeter
==========================================================
41 Camry Corolla TPS Signal / Throttle Position Sensor or Circuit, ECM
==========================================================
42 Camry Corolla Vehicle Speed
Sensor (VSS) Signal / Vehicle Speed Sensor or Circuit, ECM
==========================================================
43(2.2L) Camry Corolla Starter Signal / Starter Signal Circuit, Main Relay,

Ignition Switch or Circuit,
ECM
==========================================================
43(3.0L) Camry Starter Signal / Starter Signal Circuit, Main Relay, Ignition Switch

or Circuit,
ECM
==========================================================
51 Camry Corolla Switch / A/C Switch, Park/Neutral Switch or Circuit, TPS or Circuit
==========================================================
52(2.2L) Camry Corolla(1.8L) Knock Sensor
Signal / Knock Sensor or Circuit, ECM
==========================================================
52(3.0L) Camry Left Knock
Sensor Signal / Knock Sensor or Circuit, ECM
==========================================================
53(3.0L) Camry Knock Control
Signal / ECM
==========================================================
55(3.0L) Camry Right Knock Sensor Signal / Knock Sensor or Circuit, ECM
==========================================================
71 Camry Corolla EGR System
Malfunction / EGR System, EGR Temp. Sensor or Circuit, EGR-VSV,
ECM

Hope This Helps :thumbsup:

:chug:









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[TrailDust]

Added as a sticky in its own right. Thanks for posting up that information!

 

[flyaway76]

i own 1991 toyota camry and the cruse control is going off and on during my driving trips any idea what might be wrong.

 

[Nøttcase]

On this OBD diagnostic pagefor Toyota vehicles we show you how to get the codes without special tools...

I don't see any text or link which explains how to get them codes. :help:

 

[The Camry Man]

Before 1996 getting

Before OBDII getting codes requires putting a jumper wire between E1 and T1 in the diagnosis connector in engine compartment
then counting the flashes of Check engine Light.

Look for thread on reading codes for Gen 2

after OBDIInthere is a plug you use a scanner for inside car. then it tells you the code

 

[praghmatic]

Before OBDII getting codes requires putting a jumper wire between E1 and T1 in the diagnosis connector in engine compartment
then counting the flashes of Check engine Light.

Look for thread on reading codes for Gen 2

after OBDIInthere is a plug you use a scanner for inside car. then it tells you the code

How primitive! ! Is that a two person operation, then?

I guess before OBDII there was no such thing as "pending" codes?

 

[edrosich]

I have followed the instructions. Jumped T1 and E1. When I get back in the car. The check engine light flashes without pauses over 300 times. What would cause this? This is a 1995 Camry 2.2ltr

 

[white90dx]

I have followed the instructions. Jumped T1 and E1. When I get back in the car. The check engine light flashes without pauses over 300 times. What would cause this? This is a 1995 Camry 2.2ltr

Constant 0.5 second flashes means no codes stored (ie. normal running condition). If the engine is running with the jumper connected, that fixes the timing at base timing for checking/adjusting distributor timing.

-Charlie

 

[JarkkoL]

Older Toyota Diagnostic Trouble Codes

1: Normal Condition.
2: MAP or Air Flow Meter signal.
3: Ignition signal. (*see note below)
4: Engine Coolant Temperature Sensor signal.
(5: Oxygen Sensor.)
6: RPM signal. (*see note below)
7: Throttle Position Sensor signal.
8: Intake Air Temperature Sensor signal.
9: Vehicle Speed Sensor signal.
10: Starter signal. (STA signal)
11: Switch signal.

These codes are not just used in Toyota's meant for European market in 80's. According to Haynes Toyota Camry 1983 thru 1991 repair manual also US & Canada use these before 1987. The code number 5 is for US/Canada only and it is missing from most European repair manuals.

(* US/Canada 1983 thru 1986 and Canada 1986 use only first 7 with two exceptions, code 3 is marked as Air flow meter signal and code 6 as Ignition signal.) US 1986 uses the above 11 code list without exceptions.

Hopefully these help some North America gen 1 Camry owners and European Toyota owners looking for older one digit codes. Don't know exactly when Toyota switched to newer two digit codes in Europe.

 

[playtoy]

where can i attatch a code scanner to an 87 camry ?? please. thanku

 

[Phil_Bleach]

where can i attatch a code scanner to an 87 camry ?? please. thanku

No scanner. Look for a connector similar to this one in your engine bay, near the LH strut tower.

Look inside the cover, each hole is labeled. With the engine off, use a paper clip to jump E1 and TE1 on the diagnostic connector.

Get in the car, turn the key on but don't start the engine. The CEL should now flash. The flashes are codes. Use the list to see what they mean.

Here's how to read:

So the first example means no codes are stored. The 2nd example reads code 42. So then you'd use the list and waddaya know, you'd have a problem with the VSS...

The ECU can store many codes and they will show up in ascending order.

When you're done turn the key off and remove the jumper. If there's some kind of grease on your connector leave it there, it's normal. To clear the codes just remove the EFI fuse for a few seconds.

 

[playtoy]

Thanku Phil. I think I'm already doomed...I changes the trans fluid, filter and broke a bolt head off - the pan. Now I got a nice puddle of trans fluid this a.m. under the car. Grrr!

 

[Lion88]

Tnx))

 

[toycam88]

So multiple continuous flashes no pause means "no faults"? is that correct.
Thanx.

 

[71Corolla]

Correct.

 

[spuddie]

I have a 1990 2.5l v6 camry auto. can someone tell me what the likely cause is of the overdrive light not working? I have the unit out and all the globes appear to be aok (consistent resistence showing on all). have info that this light shows errors for transnmission with the engine check light for other stuff (this light is aok). Otherwise where can I get an OBD1 reader for this vehicle? maybe send me an e-mail [email protected]. I am in Tasmania OZ...thanks folks

 

[spuddie]

oops! [email protected]

 

[spuddie]

apears no one comes in here. anyway my techy mate has tested the unit and got all the lights working - a bit of solder but mostly light sanding etc to get the lights to connect. Now to put it back into the car and see what happens

 

[Hugh Jazscheens]

Sometimes codes are not the whole story.

Wife's Camry Hybrid threw codes for failed Engine Knock Sensor. It's impossible for a backyard mechanic to reach (under intake manifold, firewall is in the way). Local mechanic routinely opened up the air cleaner for a look-see, found a mouse nest inside. Mouse had chewed through the insulation/wires to the sensor. Dealer would have charged $900 to replace sensor, then found wiring failure and charged $??? to replace wiring harness. Luckily, mechanic had a used harness that had the right connector and spliced it in (dealer would never do that). It still cost me $500 since he had already bought the $250 sensor. Still a bargain.

Damn mouse.

 

[ScadJay]

My 86 Camry has an O/D OFF light that keeps flashing when driving, and from what I read that means there is a transmission issue. I wanted to check for codes so I found the little diagnostic box, but when I opened it, it's got this yellowish, creamy gunk inside. Anybody know what this is, what to do about it?
There is also no label for a TE1, was it a different connector in this generation?