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The code P0420 refers to "Catalyst System Efficiency Below Threshold (Bank 1)" in vehicles. This diagnostic trouble code (DTC) indicates that the engine control module (ECM) has detected that the catalytic converter is not functioning efficiently, typically due to issues such as a faulty converter, oxygen sensor problems, or exhaust leaks. Addressing this code usually involves inspecting the catalytic converter and related components to diagnose and resolve the underlying issue.
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What does code p0420 on Nissan Maxima mean?
Trouble code P0420 means:Catalyst system efficiency below threshold
What is code reader code P0420 mean?
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My F0rd F150 truck failed inspection with this code P0420. What does this code-P0420 mean?
Catalytic converter efficiency failure.
What does a P0420 code mean on a 2001 Toyota sienna?
Trouble code P0420 means:Catalyst system efficiency below threshold
What does the code p0420 mean on a 2002 infinity Q45?
Trouble code P0420 means:Catalyst system efficiency below threshold
What does the obdii code p0420 for a 1995 jaguar xjs mean?
trouble code P0420 means: Catalyst Efficiency Low - A Bank
What does check engine light error code p0420 mean?
Trouble code P0420 means:Catalyst system efficiency below threshold
What does code p0420 mean on a 2005 Chrysler town and country?
Trouble code P0420 means:Catalyst system efficiency below threshold
What mean P0420?
Trouble code P0420 means: Catalyst Efficiency Below Normal (Bank 1)
What does P0420 on a 2001 F150 mean?
Trouble code P0420 means:Catalyst system efficiency below threshold
What does P0420 on 2003 VW mean?
Trouble code P0420 means:Catalyst system efficiency below threshold
What does error code p0420 mean on a mountaineer?
Trouble code P0420 means: Catalyst System Efficiency Below Threshold (Bank 1)
