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2008 Acura RDX OBD Codes P0324, P0294, P0374, P0377, P0378: Fix for Check Oxygen Sensor & SH-AWD Light Issues

Model: Acura RDX 2008 Fault Code: P0136 Posted: 2020-12-26 00:08

Hello everyone! I'm reaching out for help with my 2008 Acura RDX. My vehicle's onboard diagnostic system is showing the following fault codes: - ENG 324 - METER 294 - METER 374 - METER 307 - METER 378 These correspond to OBD-II codes: - P0324 (Knock Sensor Circuit) - P0294 (Oxygen Sensor Heater Circuit - Bank 1, Sensor 1) - P0374 (Oxygen Sensor Circuit - Bank 2, Sensor 2) - P0377 (Oxygen Sensor Circuit - Bank 2, Sensor 3) - P0378 (Oxygen Sensor Circuit - Bank 2, Sensor 4) Additionally, two warning lights are illuminated on the dashboard: 'Check Oxygen Sensor' and 'Check SH-AWD System'. My question is: What should be my first repair step? Should I prioritize fixing the P0324 knock sensor issue or focus on the oxygen sensor-related codes (P0374, P0377, P0378) that are more directly linked to the dashboard warnings? Any guidance would be greatly appreciated.

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P0136P0141P0156P0171
Comments (3)
Anonymous 2020-12-26 14:39

I recommend addressing the P0374, P0377, and P0378 codes first. These are related to oxygen sensors on Bank 2 of the engine. Possible causes include: - Faulty oxygen sensor - Wiring or connector issues - Damaged reluctor wheel - Oil contamination - Faulty Powertrain Control Module (PCM) For more details, see: https://www.autozone.com/p0374-oxygen-sensor-circuit-bank-2-sensor-2

Anonymous 2020-12-26 19:07

Merry Christmas! Today I inspected the knock sensor and discovered a cut wiring harness. After reconnecting it, both dashboard warning lights — 'Check Oxygen Sensor' and 'Check SH-AWD System' — have completely disappeared. I also noticed that the engine feels more responsive and has regained its power. This is a significant improvement! Thanks for the prompt advice — I'm very satisfied with this fix and hope it resolves all issues permanently. Please let me know if any new codes appear in the future.

Anonymous 2020-12-26 19:38

Great to hear! The issue was actually a simple wiring fault. If you're experiencing similar symptoms, check for loose or damaged connectors — especially around sensor locations. Keep an eye on your OBD-II system and report any new codes if they reappear. This helps track whether the fix is fully effective.