Code P0324?

Tiny
BHAMDOC1973
  • MEMBER
  • 2014 BUICK ENCORE
  • 4 CYL
  • TURBO
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
How serious is this code for a car that is not running?
Thursday, November 24th, 2022 AT 10:38 AM

1 Reply

Tiny
STEVE W.
  • MECHANIC
  • 13,465 POSTS
P0324 is a knock sensor code saying that the signal voltage back to the PCM is higher than it expects, On a turbo engine it's an important item to have working. It's also a code that sets and stays set until the issue is repaired and it sees that the knock sensor is now reporting correctly. If you have a scan tool that can read it, you can easily test it by watching the timing and give the engine block a few taps with a hammer. Testing the connector is easy, there are 2 pins, the Black w yellow trace is ground, the Violet w gray trace is signal to PCM. In this case it might read a volt or so if it's receiving stray voltage. I would also check that you have a good engine to chassis and battery ground, a bad ground could cause voltage to change in the system and the PCM no longer has a good reference for the normal noise floor of the engine.
Changing it on that engine is easier from underneath you can reach up under the top side parts and get to the bolt. Remove the bolt, unplug the connector and reverse that and tighten to 15 lb ft to install the new one.
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Thursday, November 24th, 2022 AT 12:43 PM

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