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P0642 What is the sulotion to my problem this code P0642 i change the ECM and trottole body

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alicantecoli
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SOURCE: engine codes p0642 and p0451

P0451 Evaporative Emission Control System Pressure Sensor Range/Performance

P0642 Engine Control Module (ECM) Knock Control -Defective
i think the most likely cause is the anti knock sensor ,this is mainly fitted to american models rather than europeon models owing to the europeon parliament disallowing the high level of biological produced fuel used in america,the answer o this i think is to see the post i have added to this questions answer.

Posted on Nov 21, 2012

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2 Answers

My HHR keeps setting the p0193 code. The symptoms are intermittent start and stall, run rough while stopped idling and starts, runs rough, stalls the restarts like nothing happened. and


This code refers to the fuel rail pressure sensor circuit being high. The two most common problems of this code are a faulty sensor and/or faulty pressure regulator. A wiring/computer issue can also contribute to this code. I have had success with numerous vehicles displaying this code by changing the fuel pressure sensor and correcting the problems you have stated

Jan 27, 2016 | 2009 Chevrolet HHR

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Where is the valve body on toyota rav4 2003 located


I would need visuals of the valve body, and for that year rav4 they are getting over on you with the price of the transmission.
The ECM replacment would have been the first thing I would have done, as the the ECM controls all the valve servos in the valve body.

most of the time it's not the body that goes bad but the servos or the wiring. But in your case, 99.9% positive your ECM shift control programming has gone bad.

Apr 29, 2014 | 2003 Toyota RAV4

1 Answer

07 passat code p0642 related to other codes


code p0642 refers to ECM-knock control defective or sensor reference voltage A circuit low or system voltage- malfunction===causes for ecm is ECM--- for voltage A wiring is short to positive --- for system voltage ---wiring--poor connection--battery---alternator
code p2014 refers to intake manifold air control actuator position sensor/ switch bank 1 circuit malfunction=== causes --wiring --intake manifold air control actuator position sensor/switch
code p0106 refers to manifold absolute pressure MAP sensor/barometric pressure sensor-range/performance problem===causes--intake /exhaust leak--wiring--MAP sensor---Baro sensor.
code p0089 refers to fuel pressure regulator --performance problem===causes--fuel pressure regulator--mechanical fault. I would suggest that you have the battery load tested and the alternator checked for correct output as it may be the common reason for the codes .P0089 will not be electrical as it being a mechanical fault then the regulator needs replacing

Jul 23, 2013 | Cars & Trucks

1 Answer

Engine codes p0642 and p0451


P0451 Evaporative Emission Control System Pressure Sensor Range/Performance

P0642 Engine Control Module (ECM) Knock Control -Defective
i think the most likely cause is the anti knock sensor ,this is mainly fitted to american models rather than europeon models owing to the europeon parliament disallowing the high level of biological produced fuel used in america,the answer o this i think is to see the post i have added to this questions answer.

Nov 20, 2012 | Cars & Trucks

1 Answer

Crank but does not start (Error code P0642)


p0642 = sensor reference voltage a circuit low voltage
p0300 = means random misfire
check firing order connections and must be in place.
check also cables especially the high tension cable and coils for required resistance.
primary = 1.0 to 0.5 ohms
secondary = 900 to 11,000 ohms (as requires per model)

Aug 15, 2012 | Infiniti Cars & Trucks

2 Answers

I m accelaret the car but rpm not go on 2000 abou


it wont rev over 2000 rpms?? if that is what you are trying to say, it sounds like you have a clogged catalatic converter.

Jun 28, 2011 | 1997 Honda Odyssey

1 Answer

Rpm hand drop and car quite when i approach a stop


check the idle air control valve near the trottol body it cause the engine to stop when you let go of the gas pedal. It is idle air control valves job to keep the engine runnig when the driver is making a complete stop or the car is in park hope this info helps

Mar 06, 2010 | 1996 Mitsubishi Galant

1 Answer

I have a 2008 VW Passat. When the engine light came on I stopped at Autozone and they gave me the following codes: P0089, P0642, P2004. Anyone know what they mean?


CODE 89 IS FUEL PRESSURE REGULATOR 1 PERFORMANCE.CODE 642 SENSOR REFERANCE VOLTAGE CIRCUIT "A" LOW.AND CODE 2004 IS ITAKE MANIFOLD RUNNER CONTROL STUCK OPEN.CK FOR BAD OR MISSING VACUUM LINES.IS IT STILL UNDER WARRANTY

May 05, 2009 | 2008 Volkswagen Passat Sedan

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