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Toyota d4 engine my engine is not starting at times and the fault code is p0191 and p1128

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 29 Answers

SOURCE: Check Engine Light

It sounds like you may have a failing Mass Air Flow sensor, seems like Ive been seeing these tied together quite often. Its a little tricky but a good repair shop should be able to test this sensor. I dont want to tell you to replace it without having it tested cause they are a bit pricey but check around, you never know. Hope this give youu another idea where to look.

Posted on Oct 02, 2008

polarcycle
  • 1392 Answers

SOURCE: p1128 code

I looked on alldata, and my Chrysler site, and there is no P1128 code listed. Are you sure the code is correct? What motor is in it? I looked for the code online for generic reasons, and it says it is for upstream heated O2 sensors swapped. Never heard of this code ever in 14 years of service work.

Posted on May 29, 2009

  • 6 Answers

SOURCE: fault codes for a ram 2500 04

P0191 Fuel Rail Pressure Sensor Circuit Range/Performance

It maybe your Fuel Sensor, or Fuel regulator is bad. Ask dealer if there is a TSB on it, just in case it is a recall on a part that is defective and get a free fix if it is.

"HotRod"

Posted on Oct 24, 2009

  • 275 Answers

SOURCE: hi my boxer van hasgot a fuel problem i've had it

Code P0191 is fuel range pressure fault. It could be a problem with the fuel pressure sensor or connections/installation.
You need to check if the fuel pump is working and if so, at what pressure, it may be a faulty pump.
hope this helps

Posted on Nov 05, 2009

  • 64 Answers

SOURCE: i have a toyota premio

Good Day qits81, if your vehicle does not do anything funny while running it is nothing to worry about. Under normal operating conditions the engine control unit runs an automatic system diagnosis program to ensure that the engine runs at an optimum. As soon as the engine control unit received "feedback" from the sensors and all is o.k the light switches off. If there is a problem with one or more of the systems the check engine light will stay on to warn the operator that they need to have it checked out.

Posted on Nov 30, 2010

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Anon, Trouble code P0191, You may need a good tech. with scan tool to read and test system.
  • Fuel Rail Pressure Sensor Circuit Range/Performance,computer see's signal from the Fuel Rail Pressure Sensor and/or its circuit is sending erratic readings, indicating a fuel pressure condition that is abnormal. Problems could be out of gas, leaking fuel, faulty fuel pressure sensor, bad wire or plug in circuit,fuel pressure regulator, the fuel pump could be faulty also. Check the attached links,instruction and guides, Good luck
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Toyota vista d4 engine not idling at all


Sounds like the Mass Flow Flow sensor... but could be a number of things. Get a fault code reader on it pronto. They don't cost much and pay themselves in just one use.

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CODES P0300, P1128


po300 is random miss fire doubtful two O2 sensors bad at one time most likely coolant temp sensor is bad causing engine to run rich this will cause O2 sensors to throw a code(thats what they are there for..exhaust gas temp. and raw fuel) running rich will also fowl spark plugs(=miss fire) P1128 ??

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How save my D4 engine for long time


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D4 light on no matter what gear i'm in. 95 Honda Accord LX 4-cylinder. Already replaced solinoid, speedometer, fan,


The D4 light is coming on to tell you that there is one or more fault codes set in your transmission control module. The only way to retrieve codes on the 1995 models is to read "Flash Codes" output by the D4 light. (See instructions below)

RETRIEVING FLASH CODES USING THE D4 LIGHT
If fault codes are present, the D4 light will "blink" when the ignition is turned to the RUN position and will remain on at all times when the engine is running.
To retrieve the flash codes, turn the ignition switch off.
Install a jumper wire between the service check connector terminals.
The service check connector is a gray, 2-pin connector located on the PCM/TCM cover under the passenger side of the instrument panel. (See picture below)

CAUTION: DO NOT use the 3-pin located next to the service check connector.

Installing the jumper will place the PCM/TCM in diagnostic test mode.
Turn the ignition to the RUN position. Codes will be output by blinking the D4 light.
Note the number of blinks from the D4 light. A short blink indicates a single digit flash code. A long blink equals 10 short blinks. For instance one short blink indicates code 1. One long blink and four short blinks indicates code 14. If there is more than one fault code, they will be output one at a time from the lowest numbered code to the highest numbered code. It is recommended that you read the code or codes several times to make sure that you are reading it correctly.

Once you have retrieved the fault code(s) re-post your question and include the information for what codes you have and someone can then help you locate the cause of the problem.

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2001 TT Q OBD code: P1128 / which sensor controls this code ?


CODE P1128 LONG TERM FUEL TRIM ADD BANK 1 SYSTEM TOO LEAN CONDITIONS.SOUND LIKE YOU HAVE WEAK FUEL PRESSURE.FUEL PRESSURE SHOULD BE WITH NEW FUEL FILTER 36 PSI FOR THE ENGINE CODE AMU. AND FOR ENGINE CODE AEB 50 - 58 FAULTY MAF SENSOR.CLEAN FUEL INJECTORS THEY COULD BE CLOGGED CAUSE LEAN FUEL CONDITIONS,FAULTY SECONDARY AIR INJECTION SYSTEM COMBINATION VALVE STUCK OPEN OR SECONDARY AIR INJECTION SYSTEM HAS A ELECTRICAL SHORT OR ECM CONTROL FAULT.CHECK FOR INTAKE MANIFOLD VACUUM LEAKS. CHECK ALL VACUUM HOSES ON THE INTAKE.

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Your code P1128 MAP Lower Than Expected one possible cause can be your manifold tempeture sensor

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