Toyota Error Code P1605: How to Fix It

Q: Can I drive my Toyota with P1605 code?

You should avoid driving with P1605 as it indicates the knock control system isn't working properly. Continued driving could result in serious engine damage from uncontrolled knock or pinging.

Q: What causes Toyota P1605 error code?

P1605 is typically caused by faulty knock sensors, damaged wiring, incorrect ignition timing, carbon buildup in combustion chambers, or ECM issues. Poor fuel quality can also contribute to knock conditions.

Q: How much does it cost to fix P1605?

Repair costs vary from $150-800 depending on the cause. Knock sensor replacement typically costs $200-400, while timing adjustments or engine cleaning may cost more. Diagnosis fees usually range from $100-150.

Q: Will P1605 code clear itself?

No, P1605 will not clear itself. The underlying knock control system fault must be repaired before the code can be successfully cleared and prevented from returning.

Abstract

Toyota error code P1605 indicates an engine knock control system fault, which means your car's computer can't properly prevent engine knock or pinging. This is a serious issue that can cause engine damage if left untreated, so it's important to address it promptly.