Code P0420

Tiny
BEBOBEBO
  • MEMBER
  • 2012 TOYOTA CAMRY HYBRID
  • 2.5L
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
Hi, today while I am driving check engine appeared. I plugged my own OBD2 sensor and code p0420 appeared. My question is, what this mean? Is the catalytic converter is defected? Or the sensors? What is the next step to detect exactly what is the defected part?
Thanks
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Sunday, November 3rd, 2019 AT 4:22 AM

4 Replies

Tiny
BEBOBEBO
  • MEMBER
This is a blue driver report.
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Sunday, November 3rd, 2019 AT 5:37 AM
Tiny
ASEMASTER6371
  • EXPERT
Good morning,

The 420 indicates the precious metals in the converter are worn out and not processing the gases correctly. This is not a sensor issue, it is a failed catalytic convert.

You need to replace the catalytic converter.

Roy

2ar-fxe intake / exhaust: exhaust manifold: removal

1. Remove front wheel opening extension pad right hand.

2. Remove engine under cover right hand.

3. Remove front wheel opening extension pad left hand.

4. Remove engine under cover left hand.

5. Remove front exhaust pipe assembly.

(a)Disconnect the heated oxygen sensor connector.

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(b)Remove the 2 bolts, 2 compression springs and 2 nuts.

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(c)Remove the front exhaust pipe assembly from the exhaust pipe support.

(d)Remove the 2 gaskets from the exhaust manifold converter sub-assembly and front exhaust pipe assembly.

6. Remove no. 1 exhaust manifold heat insulator.

(a)remove the 4 bolts and no. 1 exhaust manifold heat insulator.

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7. Remove air fuel ratio sensor see: oxygen sensor > removal and replacement > removal.

8. Remove no. 1 manifold converter insulator

(a)remove the 3 bolts and no. 1 manifold converter insulator.

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9. Remove no. 2 EGR pipe.

(a)remove the 2 bolts, 2 nuts and no. 2 EGR pipe.

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(b)remove the 2 gaskets.

10. Remove no. 2 manifold stay.

(a)remove the bolt, nut and no. 2 manifold stay.

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11. Remove manifold stay.

(a)remove the bolt, nut and manifold stay.

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12. Remove exhaust manifold converter sub-assembly.
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Sunday, November 3rd, 2019 AT 6:12 AM
Tiny
BEBOBEBO
  • MEMBER
Hi, I will change catalytic tomorrow.

But I want quote from a car site. If they have failed, it is likely due to something else that caused it to fail. This is what a P0420 means .
What I have to check in my car to prevent damage of new catalytic converter? No other codes Appeared except P0420.
Thanks
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Sunday, November 3rd, 2019 AT 9:48 AM
Tiny
ASEMASTER6371
  • EXPERT
How many miles on the car? 100,000 to 150,000 is about the time they last.

Labor is 2 hours.

I loaded the walker ultra. It has a 5-year warranty for the light not coming back on. It runs under $300.00. The dealer catalytic converter is under $1,000.00.

Roy
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Sunday, November 3rd, 2019 AT 3:40 PM

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