Mazda 3 1.6 Knock Sensor Problem

**YooShh17** · September 11th, 2017 07:10 PM

mga sir ano po ba senyales ng sira na knock sensor??

salamat sa sasagot...

**oj88** · September 11th, 2017 07:33 PM

Check engine light will be one. Engine mis-firing, maybe and/or limp-mode.

**YooShh17** · September 11th, 2017 07:44 PM

Originally Posted by oj88

Check engine light will be one. Engine mis-firing, maybe and/or limp-mode.

yes sir my check engine po sya. senyales din po ba yong kahit baon na sa gas wala p ding hila ? hindi nmn taas rpm para sayang my bitbit na mabigat ganun.
eto po diagnostic sa obd

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**Yatta** · September 11th, 2017 08:00 PM

Originally Posted by YooShh17

yes sir my check engine po sya. senyales din po ba yong kahit baon na sa gas wala p ding hila ? hindi nmn taas rpm para sayang my bitbit na mabigat ganun.
eto po diagnostic sa obd

Imgur: The most awesome images on the Internet

Limp mode yan. Ibig sabihin pinoprotektahan ng makina sarili niya dahil may sira nga.

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**YooShh17** · September 11th, 2017 08:08 PM

Originally Posted by Yatta

Limp mode yan. Ibig sabihin pinoprotektahan ng makina sarili niya dahil may sira nga.

Sent from my MI 3W using Tapatalk

salamat po sa pag sagot.

**yebo** · September 11th, 2017 11:23 PM

low power especially under load or at high speed. i found out the knock sensor of my former mitsu lancer was damaged when going up to baguio with 5 on board and i had to shift to 2nd and 1st gears to go up even moderately steep grades of marcos hiway. after the sensor was replaced it was ok.

also higher than usual fuel consumption.

note though that symptoms may vary. it will depend if the sensor is stuck on retarded timing or if it is not working at all (then you'll hear pinging). if the engine is knocking then i suggest using higher octane gasoline untill the sensor is replaced.

**oj88** · September 12th, 2017 08:56 AM

Knock sensors are never 'stuck'. It's basically a microphone that's tuned to listen to engine knock and convert them to electrical pulses. If the ECU stops receiving these pulses due to a broken sensor, noise instead of pulses are heard, disconnected/open circuit or short circuit, a DTC is raised and the engine, 'deaf' at detecting engine knock, won't be able to correct the timing, will maintain a rich A/F mixture, and finally goes into limp-mode (reduced output power and/or speed) to protect itself.