The Check Engine light when reset will go back on in about 5 miles. I have never been successful in having this fixed. Now, I can't get it through inspection. Can anyone shed some light on these codes. Thanks in advance



ODB II Diagnostics

The MIL is commanded On.

Emissions-Related Powertrain DTCs, Mode 3:
Electronic Control Unit ID: 17
P0325
Knock Sensor 1 Circuit Malfunction (Bank 1 or Single Sensor)
P0330
Knock Sensor 2 Circuit Malfunction (Bank 2)

Continuously Monitored
Systems DTCs, Mode 7:
No Diagnostic Trouble Codes recorded.

I doubt that the knock sensors have failed, but the wiring??? Follow the wires and check for breaks and poor connectors.

Klaus
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1975 164 w/174,800mi (Sold) 1995 850T w/91,000mi, 1998 V70R w/129,000mi

The reason it doesn't go off is because the problem that cause the codes is still there. Knock sensors, it seems. What repairs if any did you do? Are you using low octane gas, or cheap/bad gas? Try putting a good brand of high test in your gas tank and see if this helps. Otherwise, it appears you'll need to replace your knock sensors. These are important...they help retard your engine's timing so it doesn't detonate. I wouldn't drive the car without this issue being fixed.
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1998 S70 T5 Emarald Green Metallic (125K), 2004 V70 2.5T Ruby Red (45K), Previous Owner of Black '94 850 Turbo Wagon (Sold at 140K and miss her). My cars have been running so well lately they've got me worried.