Knock Sensor Issues
May 29th, 2020, 8:30 AM
#1
CF Beginner
Thread Starter
Join Date: Oct 2019
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Knock Sensor Issues
Looking for some expertise on a knock sensor issue (code P0327) on a 2011 6.0L 2500 Express. I replaced both sensors. The code went away and 3days later it's back on. I've checked the wiring and didn't see any problems.
Does anyone have any suggestions on what else i need to be looking for?
Thanks
Does anyone have any suggestions on what else i need to be looking for?
Thanks
May 29th, 2020, 3:00 PM
#2
P0327 is low signal
knock sensor needs a solid ground.
the signal needs to reach the PCM. Test by probing.
If those conditions are met and you still get the code, then the PCM may be damaged.
https://us.autologic.com/news/piezoe...-knock-sensors
knock sensor needs a solid ground.
the signal needs to reach the PCM. Test by probing.
If those conditions are met and you still get the code, then the PCM may be damaged.
https://us.autologic.com/news/piezoe...-knock-sensors
May 31st, 2020, 3:44 PM
#3
CF Beginner
Thread Starter
Join Date: Oct 2019
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Knock sensors
Thank you mountainmanjoe
i will do a grounding check. Is there a way to check the PCM ? Is the PCM and ECM one of the same or are they different?
i will do a grounding check. Is there a way to check the PCM ? Is the PCM and ECM one of the same or are they different?
Last edited by James64; May 31st, 2020 at 3:55 PM.
May 31st, 2020, 5:03 PM
#4
ECM = Engine Control Module
PCM = Powertrain Control Module = ECM + integrated transmission controller
If the the knock signal looks good when probed at the PCM and you still get the code, then PCM is bad.
Make sure your battery + alternator are in good shape and the engine ground strap too.
PCM = Powertrain Control Module = ECM + integrated transmission controller
If the the knock signal looks good when probed at the PCM and you still get the code, then PCM is bad.
Make sure your battery + alternator are in good shape and the engine ground strap too.
Thread
Thread Starter
Forum
Replies
Last Post
Jay340hp
Silverado & Fullsize Pick-ups
20
August 21st, 2017 9:21 PM