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Codes 25 and 26

Tiny
ESQUIREGQ
  • MEMBER
  • 1994 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 178,000 MILES
Codes 25 and 26 appear when I check the engine light with the diagnostic machine
Wednesday, February 5th, 2014 AT 1:28 PM

6 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
Hello,

Code 25 Air/fuel ratio LEAN Code 26 Air/fuel ratio RICH This means there is a engine misfire I would start with a tune up here are two guides to help us fix the problem.

https://www.2carpros.com/articles/how-to-tune-up-a-car-engine

and

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

Please run down these guides and report back.
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Wednesday, February 5th, 2014 AT 2:52 PM
Tiny
KODYM
  • MEMBER
  • 0 POST
Thanks for this post I had this problem had a spark plug fouled.
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Tuesday, January 22nd, 2019 AT 12:40 PM
Tiny
ERICSCOTT928
  • MEMBER
  • 1 POST
  • 1995 TOYOTA CAMRY
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
The car started sputtering when I give it gas or accelerate. Idles rough. Obd1 error code 25. What to do to fix it. Has a weird smell not fuel or oil.
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Tuesday, January 22nd, 2019 AT 12:40 PM (Merged)
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
This is a lean burn code, you may have a vacuum leak start looking here.
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Tuesday, January 22nd, 2019 AT 12:40 PM (Merged)
Tiny
PAULLEWIS
  • MEMBER
  • 1 POST
  • 1992 TOYOTA CAMRY
  • 116,000 MILES
My car has a trouble code of 25 and 12. What do they mean?

92 Camry LE, V6
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Tuesday, January 22nd, 2019 AT 12:41 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
CODE 12- RPM SIGNAL
Code 12 is caused by loss of "G" or "NE" signal from distributor to ECU for at least 2 seconds after starter signal is received at ECU. Check distributor and ignition system components. Ensure starter signal (STA) exists at ECU.

CODE 25 - LEAN AIR/FUEL MIXTURE
Probable Causes:

Loose Engine Ground
Open E1 Circuit
Open Injector Circuit
Fuel Line Pressure (Blocked Injector)
Open Or Short In Oxygen Sensor Or Circuit
Ignition System
Coolant Temperature Sensor
Airflow Meter Or Air Intake System (3VZ-FE)
Vacuum Sensor (5S-FE)
ECU
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Tuesday, January 22nd, 2019 AT 12:41 PM (Merged)

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