code

p0420

cest quoi exactement se code la ??

DTC P0420: Warm Up Catalyst Efficiency Below Threshold
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TECHNICAL DESCRIPTION
•The signal from the heated oxygen sensor (rear) differs from the heated oxygen sensor (front), because the catalytic converter purifies exhaust gas. When the catalytic converter has deteriorated, the signal from the heated oxygen sensor (front) becomes similar to the heated oxygen sensor (rear).
•The ECM compares the output of the heated oxygen sensor (front and rear) signals.
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DESCRIPTIONS OF MONITOR METHODS
Heated oxygen sensor (front and rear) rich/lean switching frequencies are nearly equal.
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MONITOR EXECUTION
Continuous
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MONITOR EXECUTION CONDITIONS (Other monitor and Sensor)
Other Monitor (There is no temporary DTC stored in memory for the item monitored below)
•Heated oxygen sensor (front) monitor
•Heated oxygen sensor (rear) monitor
•Heated oxygen sensor (front) heater monitor
•Heated oxygen sensor (rear) heater monitor
•Heated oxygen sensor (front) inactive monitor
•Heated oxygen sensor offset voltage monitor
•Misfire monitor
•Fuel system monitor
•Heated oxygen sensor (rear) feedback control system monitor
•Air/fuel ratio feedback monitor
Sensor (The sensor below is determined to be normal)
•Mass airflow sensor
•Engine coolant temperature sensor
•Intake air temperature sensor
•Barometric pressure sensor
•Throttle position sensor
•Accelerator pedal position sensor

En gros c'est sa qui dise dans le manuel shop pour evo x
Sa doit etre comme qu'On disait dans l'autre post cest acose que tu a retire le catalyseur.

merci:)

Terio a écrit: En gros c'est sa qui dise dans le manuel shop pour evo x
Sa doit etre comme qu'On disait dans l'autre post cest acose que tu a retire le catalyseur.

Si il a changer les cat chercher pas plus loin.
J'ai la même chose P420 et P430, qui on popper après avoir changer pour les cat Hi-flow.
En passent avec un logiciel de tune ca ce cancel. chose qui vas se faire a la fin de l'hiver.