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My 2000 Toyota Celica recently showed check engine alert. My
My 2000 Toyota Celica recently showed check engine alert. My OBD 2 scanner revealed two P0171 codes (system too lean) plus a third code of P0420 (catalyst efficiency below threshold). Will these likel… read more
6Bucs
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I have the check engine light on as well as the vsc and trac
I have the check engine light on as well as the vsc and trac lights. The engine codes are p0420, c1201, c1223, c1241 … read more
Skyvisions
Skyvisions
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High School or GED
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2008 Toyota Sienna LE, 161k miles, throwing "P0420 Catalyst
2008 Toyota Sienna LE, 161k miles, throwing "P0420 Catalyst Efficiency Below Threshold, Bank 1" error. No other codes or obvious issues.… read more
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Have an error code p0420, catalyst system efficiency below
have an error code p0420, catalyst system efficiency below thresholld … read more
Ron Z.
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Toyota Sienna: How do I diagnois a potential problem with the
How do I diagnois a potential problem with the VSC, Vehicle Skid Control, on a 2001 toyota Sienna.… read more
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Toyota 4Runner Sport v6: Hello, I just got a 2005 Toyota
Hello, I just got a 2005 Toyota 4Runner Sport and have to deal with these error codes: P0420 - Catalyst system efficiency below threshold - Bank1 P0430 - Catalyst system efficiency below threshold - B… read more
Skyvisions
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01 toyota highlander 2.4 has codes p0420 and p0430 cat efficiency
01 toyota highlander 2.4 has codes p0420 and p0430 cat efficiency below threshold is there a pcm reprogram to address this issue… read more
Dan
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Toyota 4Runner Limited: I have a 2005 Toyota 4Runner with 107k
I have a 2005 Toyota 4Runner with 107k mile. It had been ideling a little rough so I took it to the dealer and about 500 mile after the dealer install new spark plugs and one bad plug wire my check en… read more
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Toyota Prius: My car engine came on and is reading code P0420
My car engine came on and is reading code P0420 Catalyst System efficiency below threshold bank 1......I was told it's the oxygen sensor......I'm vacationing in FL and need to drive back to Indiana...… read more
Skyvisions
Skyvisions
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Toyota Camry: I have a 2001 toyota camry with a 4 cyl engine
I have a 2001 toyota camry with a 4 cyl engine with the following code. P0420 Catalyst system efficiency Below threshold ( Bank 1) can someone what problems cause this code to come up.… read more
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2001 Toyota Tacoma pre runner: catalyst system efficiency..v6
P0420 catalyst system efficiency below threshold bank 1 on a 2001 Toyota Tacoma Prerunner v6 3.4 liter engine.… read more
Ron Z.
Ron Z.
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2001 Camry: actron..Catalyst System Efficiency Below Threshold bank
Hello, My brother's 2001 Camry CE. I used an Actron CP9125 pocketscan and pulled 2 codes. P0420 & P0420pd which says it's a Catalyst System Efficiency Below Threshold Bank 1. My question is, what exac… read more
Skyvisions
Skyvisions
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1996 toyota tacoma: 4x4 2.7lliter check eng..lite..emission..muffler
i have a 1996 toyota tacoma extcab 4x4 2.7lliter check eng. lite on failed emission in Az p0420 catalyst system efficiency below threshold (bank 1)(5).thetruck has a pacesetter header and magna flow c… read more
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2001 Rav4: the check engine light recall..inspection..toyota
I have a 2001 Rav4 that has not been updated for the check engine light recall yet and failed inspection with error codes P0420, toyota +rav 4 check engine lilght recall0430, P1135, and P1155. can you… read more
Ron Z.
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4Runner: 2WD..check engine..threshold), also the VSC TRAC
hello, I have a 2001 2WD 4Runner,the check engine is on, the is code P0420 (catalyst efficiency below threshold), also the VSC TRAC… read more
Skyvisions
Skyvisions
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2003 Camry: check engine light came on two days..000 miles..exhaust
The check engine light came on two days ago in my 2003 Camry with 175,000 miles. Went to Auto Zone who gave me a code of P0420 - "catalytic system efficiency below threshold." I'm noticing some black … read more
Amedee
Amedee
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Vocational, Technical or Trade Scho
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2001 toyota highlander: 000 miles..check engine light came..catalyst
I have a 2001 toyota highlander with 132,000 miles. The check engine light came on reading a code 420. According to the manual that is a bank 1 catalyst system efficiency below threshold. My question … read more
lexpert
lexpert
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2003 toyota tacoma: i have a check engine light problem..v..catalyst
i have a check engine light problem on my 2003 toyota tacoma v-6 extra cab.....after hooking a machine to it it read...engine catalyst efficiency below threshold..bank 1...can you tell me wha this mig… read more
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