OBD2 Codes P1420 and P0134 - Honda-Tech


OBD2 Codes P1420 and P0134

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Old 08-02-2010, 06:30 PM   #1
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Default OBD2 Codes P1420 and P0134

Hello,

I am trying to find out some information regarding the OBD2 codes on my 2003 Honda Civic Hybrid. I just rolled 100,000 miles on my Honda and the check engine light came on. When I connect an OBD2 Scan Tool, I get the following codes along with the following information:

P1420 NOx CATAYZER PERFORMANCE
(NOx ADSORPTIVE CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD)
Catalyst Temperature Sensor Failure

P0134 O2 CIRCUIT NO ACTIVITY DETECTED
(BANK 1, SENSOR 1)
A/F sensor 1 heater system malfunction

Since I don't have the wiring or diagnostic codes manuals, I was wondering if you could help me with the failed component (e.g., A/F sensor 1) and its location.

Thanks.
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Old 08-02-2010, 07:46 PM   #2
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Default Re: OBD2 Codes P1420 and P0134

just reset the code and see if it comes back on...if it does then your o2 sensor is probably bad.
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Old 09-04-2010, 04:26 PM   #3
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Default Re: OBD2 Codes P1420 and P0134

It was a bad sensor - Thanks.
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Old 09-09-2010, 06:07 PM   #4
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Default OBD2 Codes P1420 and P0134

I just ordered a Scanner when that gets here I will start investigating. The car is 10 years old and I need to replace all perishable items slowly.
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Old 11-07-2013, 11:48 AM   #5
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Default Re: OBD2 Codes P1420 and P0134

Hello, I have bought a honda civic 2 weeks ago, with an engine management light on. The Honda is 2003 2.0 litre I-VTEC. The code I am told is p0134 - Oxygen sensor.

The mechanic said he would fix it with a Honda part costing 175 + VAT, and charge 275 for the job fitted. Is this too much!

I rang another mechanic, and he asked lots of questions as to which sensor, as there are two?

Anyone got any information on these Sensors, are there more than 1, and do they cost 175 each??
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1420, 2002, adsorptive, catalyst, catalytic, civic, code, converter, efficiency, honda, hybrid, nox, p0134, p1420, system, threshold

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