I put new p0325 and p1163 sensor ,clear engine code,but it pop on again.

P0325 P1682
https://www.fixdapp.com/blog/p0325
https://www.engine-codes.com/p1682.html

P0325 Knock Sensor 1 Circuit Malfunction
A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged.
The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.
Symptoms You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.
Causes A code P0325 most likely means one or more of the following has happened:

• The knock sensor is faulty and needs to be replaced
• There is a wiring short/fault in the knock sensor circuit

What gasoline rating is the octane?

Code 0325 is for a Knock sensor. Code 0340 is for the Cam sensor #1 if this is an engine with 2 heads and it is an indication of a single sensor on single head engines.

So if you do have a multiple hed engine, you may have removed the good sensor and left the bad sensor in the other head.

Remember to wipe the computer memory after installing new parts.

After your car has performed enough successful warm-up and run cycles, the codes will clear and your check engine indicator will shut off.

Alternatively, a car parts store can clear them for you with an OBDII compliant scanner.

Hi,

code P0325 is for knock sensor and it looks like is a common problem with these engines.You might need to replace the knock sensor, and this is a few hours job for a qualified mechanic.You can try first using a high grade gasoline, but I doubt it will fix the problem.
code P0420 -right bank -B1 three way catalyst function.
possible cause for P0420:
-you might have a hole in the exhaust tube
- you might have some intake air leaks
- injectors leaks
-spark plugs
check first for some damage exhaust tube.or it might be related to code p0325, as a change in timing dictated by knock sensor malfunction.
hope this will help.
Good luck.

P0325 has nothing to do with the MAF sensor or the throttle body. Are there other problems you are trying to solve? If you have a new knock sensor, the 325 is probably caused by poor connection. Make sure the female terminals in the connector on the car side are closed enough to grip the male counterparts on the sensor pigtail tightly. If you correct the problem, the code should clear on it's own after driving about an hour. If you have more questions, please let us know.

P0325 is a knock sensor. the knock sensor will not set the ses ligth

CODE PO420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK I * CODE PO325 KNOCK SENSOR NO.1 CIRCUIT MALFUNCTION BANK NO.1 OR SINGLE SENSOR

po325--ignition system or missfire.