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No, a faulty knock sensor will cause a code 43 normally. check for spark, diconnect a wire from a plug, install a plug in the wire, lay it on something metal, have an assistant crank the motor and watch for spark...

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โˆ™ 2006-04-10 03:50:55
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Q: Could a anti knock sensor that is unplugged or defective cause problems with the 305 motor starting?
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What does the blinking red light on a Honda CRX ECU signify?

the lights flash in sequence to show dtc's (diagnostic trouble codes)count the #of flashes and that is the # of the codefor example if u r having a problem w/fuel inj. or main relayu should get 16 flashes then about a 3 sec pause then the code willrepeat unless there is more than one code so watch closelyevery 3 sec pause indicates the start of next codeTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge FlowTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge FlowTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge FlowTo find out what each code means, check this table:1) Primary oxygen sensor- Defective circuit or unplugged/ Defective sensor2) Oxygen sensor "B" - Defective circiut or unplugged/ Defective sensor3) MAP (Manifold Absolute Pressure) Sensor - Defective circuit or unplugged/ Sensor4) CKP (Crankshaft Position Sensor) - Defective circuit or unplugged/ Defective sensor5) MAP (Manifold Absolute Pressure) sensor -Mechanical problem/ Disconnected piping6) ECT ( Engine Coolant Temperature) Sensor- Defective circuit or unplugged/ Sensor7) TP (Throttle Position) Sensor -Defective circuit or unplugged/ Defective sensor8) TDC (Top Dead Centre) Sensor -Defective circuit or unplugged/ Defective sensor9) CYP (Cylinder) - Defective circuit or unplugged/ Defective sensor10) IAT (Intake Air Temperature)sensor- Defective circuit or unplugged/Defective sensor12) EGR (Exhaust Gas Recirculation) -Defective circuit or unplugged/ Defective sensor13) Atmospheric Pressure Sensor - Defective circuit or unplugged/ Defective sensor14) IAC (Intake Air Control) Valve- Defective circuit or unplugged / Defective sensor15) Ignition Output Signal - Missing or defective ignition output signal16) Fuel Injector System - Defective circuit or unplugged/ Defective fuel injector17) VSS (Vehicle Speed Sensor) - Defective circuit or unplugged/ Defective sensor19) Automatic transmission lockup control Solenoid Valve- Defective circuit or unplugged/ Defective solenoid. A/T Only.20) Electronic Load Detector - Defective circuit or unplugged/ Defective sensor21) VTEC Solenoid Valve- Defective circuit or unplugged/ Defective solenoid22) VTEC Oil Pressure Switch - Defective circuit or unplugged/ Defective switch23) Knock Sensor - Defective circuit or unplugged / Defective sensor30) Automatic Transmission Signal- Defective circuit or unplugged/ Defective sensor31) Automatic Transmission Signal "B"- Defective circuit or unplugged/ Defective sensor41) Primary Oxygen Sensor Heater- Circiut malfunction43) Fuel Supply System - Defective or malfunctioning Fuel Supply Sytem45) System too lean or too rich - Malfunction in the fuel monitoring systems48) LAF (Lean Air Fuel) sensor - Defective circuit or unplugged / Defective sensor54) CKF (Crankshaft Speed Fluctuation) sensor- Defective circuit or unplugged / Defective sensor61) Primary Oxygen sensor circuit- High/ Low Voltage, Or slow response63) Secondary Oxygen Sensor circuit- High/ Low Voltage, Or slow response67) Catalyst System Efficiency Below Threshold- Malfunctioning catalyst system70) Automatic Transmission - Malfunction with Automatic Transmission Controls71-74) Random misfire in Cylinders 1-4- Condition present Creating Misfire80) EGR (Exhaust Gas Recirculation) Insufficient Flow Detected86) ECT (Engine Coolant Temperature) Circuir Range / Performance Problem90) Evaporative Emissions Contrlo System - Leak Detected In Fuel Tank Area91) Fuel Tank Pressure Sensor- Low Input92) Evaporative Emission Control System Control System- Insufficient Purge Flow


What does the error code 8 mean on a 1990 Honda Accord?

TDC Sensor (Top Dead Center)defective circuit or unplugged / defective sensor


If you had 4 blinks on your crx 89?

Go to the following web site: http://www.hondacrx.co.uk/technical/faq/errorcodes.htm#2 But, 4 blinks usually means: Crankshaft Angle Sensor (CAS) defective circuit or unplugged / defective sensor Hope that helps.


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I have a 240 and with the knock sensor unplugged it will still start so I would have to say no.


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12 degrees with the coolant temperature sensor unplugged.12 degrees with the coolant temperature sensor unplugged.


How do you fix obd code p0172 ona 99 Chevy Suburban?

Fuel system to rich bank 1. It can be many things.Possible causes:PCM software needs to be updatedMass Airflow Sensor (MAF)Defective Manifold Absolute Pressure Sensor (MAP)Engine mechanical problemsDefective Oxygen SensorDefective Fuel Pressure RegulatorDefective Coolant and/or Air Temperature SensorThermostat is stuck openIgnition MisfiresDefective Throttle Position SensorDefective or restricted fuel return lineDefective Fuel Injectors


How do you fix error code Po715 on a Ford Escort?

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What is the ignition timing setting for a dodge charger 2.2 gas engine?

12 btdc with coolant sensor unplugged for most 2.2L's12 btdc with coolant sensor unplugged for most 2.2L's


Why would a 1991 Pontiac be overheating upon starting the car?

No coolant Thermostat not opening Defective temperature sensor


Will the crank sensor behind the harmonic balancer prevent the motor from starting if it is defective on a 1995 3.1 Chevy?

Yes


Tramission code 10 on 93 Honda Accord?

CODE 10 for Accord Civic CRV CRX Del Sol Odyssey Prelude 85-98 86-98 97-98 85-91 93-97 95-98 85-98 = IAT Sensor (Intake Air Temperature) defective circuit or unplugged / defective sensor


Will a 1995 neon start if cam sensor is unplugged?

No.


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On a 94 3000gt If your o2 sensor is faulty will it not start entirely or will it be dead in the water?

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What is Jandy AquaPure code 172?

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Why wont truck start with map sensor plugged in but starts with it unplugged?

odds are the sensor needs to be replaced


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Defective temperature gauge or defective temperature sensor?


Can a defective coolant temperature sensor cause gear banging in a VW Touareg?

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Why does engine quit after start?

On newer fuel injected cars when the Manifold Absolute Pressure sensor (M.A.P sensor) goes bad it will cause the car to fire up but then quickly stall. Unplug the MAP sensor and then try starting the car, if it will stay running with it unplugged it is the culprit (don't try and drive around with it unplugged though, it will run terrible and get horrible milage) This is just one of many possible causes


What does the code p0706 mean for 2003 PT Cruiser?

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defective oxygen sensor


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Yep.


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Will a vehicle pass smog if the o2 sensor is out?

No, it will not pass the smog test with a defective or removed O2 sensor.


How do you Reset oxygen sensor dodge ram 1500?

The oxygen sensor can not be reset and must be replaced if defective.