Description
OBD-II Trouble Code Description for P0326 Chevrolet
Knock Sensor 1 Circuit Range/Performance
What does this mean?
OBD2 Code P0326 Chevrolet definition:
Knock sensors are used to detect engine pre-detonation (engine knock or ping). The knock sensor (KS) is usually a two wire sensor. A 5 volt reference is supplied to the sensor and there is a signal return from the knock sensor to the PCM (powertrain control module). The sensor signal wire informs the PCM when a knock occurs and in what degree of severity. The PCM will retard the spark timing to avoid pre-detonation. Most PCMs have the ability to learn spark knock trends in the engine during normal operation. If the PCM determines that the knock is out of the ordinary or that the noise level is abnormally high, P0326 Chevrolet may set. If the PCM senses that the knock is severe and cannot be eliminated by retarding the spark timing, P0326 Chevrolet may set. Keep in mind that knock sensors cannot distinguish between a knock from pre-detonation or one from engine problems.
Symptoms
Possible sumptoms of OBD code P0326 Chevrolet
Symptoms of a P0326 Chevrolet DTC may include: MIL (Malfunction Indicator Lamp) illumination Audible knocking from the engine compartment Pinging from engine under acceleration
Causes
Possible causes of OBD code P0326 Chevrolet
Potential causes of a P0326 Chevrolet code include: Knock sensor connector is damaged Knock sensor circuit is open or shorted to ground Knock sensor circuit is shorted to voltage Knock sensor has failed Moisture in knock sensor connectors Incorrect fuel octane PCM has failed
Possible Solutions
If an engine knock can be heard, fix the source of the mechanical problem first then retest. Make sure the proper octane of fuel was used in the engine. Using lower octane fuel than what is specified can cause a ping or pre-detonation and may cause P0326 Chevrolet. Unplug the knock sensor and check for water or corrosion in the connector. If the knock sensor has a seal, verify there is no coolant from the engine block fouling the sensor. Repair as necessary. Turn ignition to run position with engine off. Ensure that 5 Volts are present at the KS connector. If there is, check for proper resistance between KS terminal and engine ground. You will need a vehicle specification for this. If resistance is out of specification, replace the knock sensor. If resistance is normal, plug KS back in and idle the engine. Using a scan tool in datastream, observe KS value. Does it indicate a knock is present at idle? If so, replace the knock sensor. If the knock sensor shows no knock at idle, then tap on the engine block while observing the knock signal. If it doesn’t show a signal that corresponds with the taps, replace the knock sensor. If it does, verify the knock sensor wiring isn’t routed next to ignition wires. If there was no 5 volts present at the knock sensor connector while unplugged with KOEO (Key on engine off) then go back to the PCM connector. Turn ignition off and clip the knock sensor 5 volt reference wire in a location that is easy to repair (Or remove the wire from the PCM connector). With KOEO, check for 5 volts on the PCM side of the clipped wire. If 5 volts isn’t present, suspect a bad PCM. If 5 volts IS present, repair short in 5 volt reference circuit. Since the reference circuit is a shared circuit, you will need to check all engine sensors that are fed a 5 volt reference. Unplug each sensor one at a time until the reference voltage returns. When it returns the last sensor you plugged in is the shorted sensor. If no sensors are shorted, check the wiring harness for short to voltage on reference circuit.
The OBD2 Code Information Be Applicable For Chevrolet
2013 Chevrolet Traverse2013 Chevrolet Trailblazer2013 Chevrolet Spark2013 Chevrolet Sonic RS2013 Chevrolet Onix2013 Chevrolet Malibu ECO2013 Chevrolet Malibu2013 Chevrolet Cruze Station Wagon2013 Chevrolet Corvette 427 Convertible2013 Chevrolet Camaro ZL1 Convertible2013 Chevrolet Camaro Hot Wheels Edition2013 Chevrolet Camaro 1LE2012 Chevrolet Tru 140S Concept2012 Chevrolet Sonic Sedan2012 Chevrolet Sonic2012 Chevrolet Silverado2012 Chevrolet Orlando2012 Chevrolet Cruze Hatchback2012 Chevrolet Corvette Z06 Centennial Edition2012 Chevrolet Corvette Daytona Racecar2012 Chevrolet Colorado2012 Chevrolet Code 130R Concept2012 Chevrolet Captiva2012 Chevrolet Camaro ZL12012 Chevrolet Camaro EU Version2012 Chevrolet Camaro Convertible EU Version2012 Chevrolet Camaro COPO Convertible2012 Chevrolet Camaro COPO2012 Chevrolet Camaro 67 Hot Wheels Concept2012 Chevrolet Camaro 45th Anniversary Edition2012 Chevrolet Aveo Sedan2011 Chevrolet Volt2011 Chevrolet TrailBlazer Concept2011 Chevrolet Silverado HD2011 Chevrolet Sail2011 Chevrolet Miray Concept2011 Chevrolet Cruze2011 Chevrolet Corvette Z06 Carbon Limited Edition2011 Chevrolet Colorado Rally Concept2011 Chevrolet Colorado Concept2011 Chevrolet Caprice Police Patrol Vehicle2011 Chevrolet Camaro SS Convertible Indy 500 Pace Car2011 Chevrolet Camaro Convertible Neiman Marcus2011 Chevrolet Camaro Convertible2011 Chevrolet Aveo2010 Chevrolet Volt MPV5 Concept2010 Chevrolet Spark2010 Chevrolet Equinox2010 Chevrolet Corvette Z06X Concept2010 Chevrolet Corvette Grand Sport2010 Chevrolet Camaro Transformers2010 Chevrolet Camaro SS Indy 500 Pace Car2010 Chevrolet Camaro SSX Concept2010 Chevrolet Camaro SS2010 Chevrolet Camaro Red Flash Concept2010 Chevrolet Camaro2010 Chevrolet Aveo RS Concept2010 Chevrolet Agile2009 Chevrolet Traverse2009 Chevrolet Stingray Concept2009 Chevrolet Cruze WTCC2009 Chevrolet Cruze2009 Chevrolet Corvette ZR12009 Chevrolet Corvette GT12009 Chevrolet Aveo52008 Chevrolet Orlando Concept2008 Chevrolet Matiz2008 Chevrolet Malibu LTZ2008 Chevrolet Malibu LT2008 Chevrolet Lumina SS2008 Chevrolet HHR SS2008 Chevrolet GPiX Concept2008 Chevrolet Equinox Sport2008 Chevrolet Corvette2008 Chevrolet Captiva Sport2008 Chevrolet Camaro LS7 Concept2008 Chevrolet Camaro GS Racecar Concept2008 Chevrolet Camaro Black Concept2008 Chevrolet Aveo2007 Chevrolet Volt Concept2007 Chevrolet Trax Concept2007 Chevrolet Tahoe2007 Chevrolet Suburban LTZ2007 Chevrolet Silverado Regular Cab2007 Chevrolet Silverado Extended Cab2007 Chevrolet Silverado Crew Cab2007 Chevrolet Silverado 3500 HD LTZ Crew Cab2007 Chevrolet Silverado 2500 HD LTZ Extended Cab2007 Chevrolet Jay Lenos Corvette C6RS E852007 Chevrolet HHR Panel2007 Chevrolet Groove Concept2007 Chevrolet Camaro Convertible Concept2007 Chevrolet Beat Concept2007 Chevrolet Avalanche LTZ2007 Chevrolet 34 Coupe E85 Concept2006 Chevrolet WTCC Ultra Concept2006 Chevrolet TrailBlazer SS2006 Chevrolet Silverado Z71 Extended Cab2006 Chevrolet Silverado Intimidator SS2006 Chevrolet Silverado Hydrogen Military Vehicle2006 Chevrolet Sequel Concept2006 Chevrolet Nubira Station Wagon WTCC R2006 Chevrolet Monte Carlo SS2006 Chevrolet Malibu SS2006 Chevrolet Malibu Maxx SS2006 Chevrolet Kodiak C45002006 Chevrolet Impala SS2006 Chevrolet Impala2006 Chevrolet HHR LT2006 Chevrolet Epica2006 Chevrolet Corvette Z06 Daytona 500 Pace Car2006 Chevrolet Corvette Z062006 Chevrolet Cobalt SS2006 Chevrolet Cobalt LT2006 Chevrolet Celta2006 Chevrolet Captiva2006 Chevrolet Camaro Concept2006 Chevrolet Aveo Sedan2005 Chevrolet West Coast Customs HHR2005 Chevrolet Uplander2005 Chevrolet Silverado Hybrid2005 Chevrolet Kodiak2005 Chevrolet Equinox2005 Chevrolet Corvette C6R Race Car2005 Chevrolet Corvette C62005 Chevrolet Corvette2005 Chevrolet Cobalt Sedan2005 Chevrolet Cobalt SS Supercharged Coupe2005 Chevrolet Cobalt SS2005 Chevrolet Cobalt2005 Chevrolet Cavalier Xtreme2005 Chevrolet Astra GSi 2.0 16V2005 Chevrolet Astra 2.0 Flexpower Elite2005 Chevrolet Astra 2.0 Flexpower Elegance2005 Chevrolet Astra 2.0 Flexpower Comfort2004 Chevrolet Tracker Turbo2004 Chevrolet Silverado2004 Chevrolet SOCAL SSR Bonneville Salt Flats2004 Chevrolet S3X Concept2004 Chevrolet Nomad Concept2004 Chevrolet Monte Carlo SS2004 Chevrolet Matiz M3X Concept2004 Chevrolet Malibu Maxx2004 Chevrolet Malibu2004 Chevrolet Lumina SS2004 Chevrolet Impala SS2004 Chevrolet Express2004 Chevrolet Electric S-10 Concept2004 Chevrolet Corvette Z06 Commemorative Edition2004 Chevrolet Colorado Regular Cab2004 Chevrolet Colorado LS Z71 Extended Cab2004 Chevrolet Colorado LS Z71 Crew Cab2004 Chevrolet Colorado LS Regular Cab2004 Chevrolet Colorado LS Extended Cab2004 Chevrolet Colorado LS Crew Cab2004 Chevrolet Colorado Extended Cab2004 Chevrolet Colorado Cruz2004 Chevrolet Cheyenne Concept2004 Chevrolet Aveo LS 5 Door2004 Chevrolet Aveo LS 4 Door
Note:
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