VOLVO
ECM-042B - Rear temperature sensor, catalytic converter. Faulty signal
Układ
Sterownik silnika (ECM)
Modele Volvo, których dotyczy ten kod błędu
Dotyczy następujących modeli:
4 modeleC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Pokaż modele wg rocznika i silnika (10)
- Volvo C30 (2007–2013)2007Tylko silnik: D4204T
- Volvo C30 (2007–2013)2008–2010Tylko silnik: D4204T · Tylko skrzynia biegów: MMT6, MPS6
- Volvo C70 (2006–2013)2008Tylko silnik: D4204T
- Volvo C70 (2006–2013)2009–2010Tylko silnik: D4204T · Tylko skrzynia biegów: MMT6, MPS6
- Volvo S40 (2004–2013)2005–2006Tylko silnik: D4204T, D4204T2
- Volvo S40 (2004–2013)2007Tylko silnik: D4204T
- Volvo S40 (2004–2013)2008–2010Tylko silnik: D4204T · Tylko skrzynia biegów: MMT6, MPS6
- Volvo V50 (2004–2013)2005–2006Tylko silnik: D4204T, D4204T2
- Volvo V50 (2004–2013)2007Tylko silnik: D4204T
- Volvo V50 (2004–2013)2008–2010Tylko silnik: D4204T · Tylko skrzynia biegów: MMT6, MPS6
Co oznacza ten kod błędu?
The engine control module (ECM) continuously compares the signal from the rear temperature sensor in the catalytic converter with a calculated value. If they do not match, the fault is set, and it is diagnosed when the ignition is switched on. The causes are poor contact in the connections, an open or shorted wiring fault, or a damaged temperature sensor.
Możliwe przyczyny
- Poor contact, contact resistance or oxidation at the sensor terminals
- Open circuit or short circuit in the wiring to the temperature sensor
- Damaged temperature sensor
Co możesz zrobić
- 1Switch off the ignition and check the connector to the rear temperature sensor for looseness, contact resistance and oxidation
- 2Use a multimeter to check that the signal wire from the rear sensor has no open circuit and is not shorted to ground or voltage
- 3Also use a multimeter to check that the voltage wire to the sensor has no open circuit and is not shorted to ground or voltage
- 4If you have a diagnostic tool, read the rear sensor temperature in live data while the engine warms up and check that it rises evenly
- 5If the fault remains, have a workshop with diagnostic equipment check the rear temperature sensor and replace it if needed
Objawy, które możesz zauważyć1
- The check engine lamp lights or behaves abnormally
Ogólne wskazówki dla właścicieli. Diagnostyka na samochodzie może wskazać inną przyczynę.