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1997 Toyota Camry V6 Check Engine Light Returning with P0130, P0133, P0150, P0153 O2 Sensor Codes

Model: 97 Camry Fault Code: P0121 Posted: 2009-10-24 22:45

I recently replaced both upstream oxygen sensors on my 1997 Toyota Camry V6, and the car's performance improved significantly. However, after driving just a few miles, the check engine light returns. The trouble codes I'm seeing are P0130 (Bank 1 Sensor 1), P0133 (Bank 1 Sensor 2), P0150 (Bank 2 Sensor 1), and P0153 (Bank 2 Sensor 2). Despite the improved drivability, these codes persist. What could be causing this issue? Are there any common causes or troubleshooting steps I should consider before replacing parts again?

Related fault codes
P0121
Comments (8)
Anonymous 2009-10-25 08:11

Make sure you've checked the fuses and relay for the oxygen sensors—some models have a dedicated relay in the underhood fuse box. A blown fuse or faulty relay can cause intermittent sensor signal issues.

Anonymous 2009-10-25 08:32

Some aftermarket oxygen sensor brands don't meet the PCM's heater element requirements, leading to incorrect duty cycle readings. This can result in persistent codes even if the vehicle runs better. Bosch sensors are known for their reliability and compatibility with Toyota systems—consider using OEM or reputable brands like Denso.

Anonymous 2009-10-25 08:46

I purchased Power Pro oxygen sensors from an online retailer. They were affordable, but I now suspect they may not be fully compatible with the PCM's heater control requirements.

Anonymous 2009-10-25 10:02

Agree with Jeff—if fuses and relays are intact, the issue is likely due to faulty or incompatible oxygen sensors. The codes suggest a sensor malfunction rather than a wiring problem.

Anonymous 2009-10-25 11:02

I've never heard of Power Pro in this context. It's possible the manufacturer name was not clearly visible on the old sensors—check near the hexagonal portion for brand markings. If it's Denso or another OEM brand, that would explain better compatibility. For best results, purchasing genuine Toyota parts from an authorized dealer is recommended.

Anonymous 2009-10-25 18:12

I couldn't locate the oxygen sensor fuse—maybe this model doesn’t have one. I made a cost-saving choice by buying aftermarket sensors instead of OEM ones. That might be where the problem lies.

Anonymous 2009-10-26 05:09

The fuses are typically located in the underhood fuse box. If you've ruled out electrical issues, focus first on ensuring you're using high-quality, compatible oxygen sensors—especially those with proper heater elements and signal response.

Anonymous 2011-08-13 16:39

Hi Machinehead26—I have the same codes on my 1997 Lexus ES300. A mechanic recently diagnosed a vacuum leak in the brake booster as the root cause. I've installed genuine front oxygen sensors less than 15,000 miles ago. How did you resolve your issue? Any insights would be greatly appreciated! Thanks!