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Obd code p1123 - Toyota Cars & Trucks

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Posted on Jan 02, 2017

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SOURCE: 2001 hyundai accent gl 1.6L, p1123 code comes on, what do I have to do to fix it myself?

LONG TERM FUEL TRIM FUEL MIXTURE TOO RICH, POSSIBLE CAUSES FAULTY OXYGEN SENSOR, FAULTY FUEL PRESSURE REGULATOR,DIRTY FUEL INJECTORS STICK OPEN,OR ENGINE HAS MECHANICAL FAILURE FAULTY CYLINDER COULD HAVE LEAKING VALVE OR VALVES COULD HAVE INTAKE LEAK.

Posted on Sep 14, 2012

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1 Answer

It does not start. reads p1123


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Why does my 2001 Hyundai accent stall? Auto Zone ran a check and these are the numbers they came up with P0108,P0300,P1123,P0304,P0303, P0302, P0301 They say AIC does not come up as bad. What do I do?


that autozone sales person should have asked when is the last time it had a tune up... ie, spark plugs etc...

reset the ecu/ecm and clear the codes... see if the same codes come back to verify

look for vacuum leaks first if you already done a tune up by changing those worn spark plugs, etc
P1123 Hyundai Long Term Fuel Trim Error System Rich

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and the 0300's have something to do with your ignition components; i'll let you google those since i googled the first 2 for you

Mar 28, 2015 | 2001 Hyundai Accent

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Tra-for air leak age


http://www.engine-light-help.com/kia-check-engine-light.html
P1123 Long Term Fuel Trim Adaptive Air System Low - Read Our Article On Oxygen Sensor Codes For Help With This Kia Check Engine Light Code

Mar 27, 2013 | 2000 Kia Sportage

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2001 hyundai accent gl 1.6L, p1123 code comes on, what do I have to do to fix it myself?


LONG TERM FUEL TRIM FUEL MIXTURE TOO RICH, POSSIBLE CAUSES FAULTY OXYGEN SENSOR, FAULTY FUEL PRESSURE REGULATOR,DIRTY FUEL INJECTORS STICK OPEN,OR ENGINE HAS MECHANICAL FAILURE FAULTY CYLINDER COULD HAVE LEAKING VALVE OR VALVES COULD HAVE INTAKE LEAK.

Aug 27, 2012 | 2001 Hyundai Accent

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Check engine codes read: p1123, and p0128 what do I need to fix?


2001 accent gl 1.6, p1123 code comes on. how can I repair it myself?

Mar 16, 2010 | 2000 Hyundai Accent

1 Answer

I have a 2000 accent. when the weather is damp, I get extreme misfiring which clears up after a couple of blocks. Similar to the old cracked rotor cap problem. Also have code P1123. Any help would be...


This problem of misfire in the damp is commonly caused by faulty HT leads or electronic coils. Check all plug leads first.

P1123 fault code is often associated with a faulty MAF on Hyundai cars. However first start at the air inlet tube, checking for obstructions or leaking vacuum hose which may also cause this code to show.

Jun 21, 2009 | 2000 Hyundai Accent

1 Answer

I have a 2000 model auto Hyundai accent, it has been not wanting to accelerate intermittenlty, is worse hwne car has been running for a while in traffic. We have found the error code as P1123, can you...


obdII P1123 is a error refer to Air/fuel controller
OBDII P1123 Fuel Trim Additive, System Too Rich


the obdII P1123 is a error refer to Air/fuel controller


OBDII P1123 Fuel Trim Additive, System Too Rich

the following info is a copy/paste of HMA service:


PRIMARY COMPONENT:

Air/Fuel Control System

SECONDARY SENSOR(S):

Mass Air Flow (MAF) Sensor
Throttle Position (TP) Sensor
Intake Air Temperature (IAT) Sensor
Engine Coolant Temperature (ECT) Sensor
Oxygen Sensors

FAILURE CONDITIONS

If the air/fuel mixture at idle is too rich for more than 30 seconds during two back-to-back trips, this code will be set and the Malfunction Indicator Light (MIL) will be turned on.

Details:


The code will be triggered if the following conditions are met:

Long term fuel trim value (additive) is less than -0.75 ms (-15% to -20%) for 30 seconds or more
Engine speed is less than 880 RPM (1000 RPM, 2.0L Tiburon)
Mass air flow rate is less than 6.1 g/s (7.5 g/s, 2.0L Tiburon)
Engine coolant temperature is greater than 158°F (70°C) [176°F (80°C), Accent]
Engine in closed loop operation
No canister purge occurring

Sep 08, 2008 | Hyundai Accent Cars & Trucks

1 Answer

1996 Hyundai Elantra


P1123 is a bad MAF sensor or an intake air leak before the MAF, like a loose hose clamp, also try cleaning the MAF inside, they make MAF cleaner, brand CRC.

Sep 03, 2008 | 1998 Hyundai Elantra

1 Answer

I have engine ligth on


3 weeks ago i fix a code p1123 it was maf sensor hope it help pierre

Jul 29, 2008 | 2001 Hyundai Accent

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