P0503 Citroen Vehicle Speed Sensor A Intermittent/Erratic/High
Possible causes
– Faulty Vehicle Speed Sensor
– Vehicle speed sensor harness or connectors is open or shorted
– Vehicle speed sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)
– Vehicle speed sensor harness or connectors is open or shorted
– Vehicle speed sensor circuit poor electrical connection
– Faulty Engine Control Module (ECM)
What about the obd code?
The signal sent by the vehicle speed sensor to ECM is too high or intermittent.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Speedometer may not work properly
– Transmission shifting problem
– Speedometer may not work properly
– Transmission shifting problem
P0503 Citroen Description
The vehicle speed sensor outputs a 4 pulse signal for every revolution of the rotor shaft, which is rotated by the transmission output shaft via the driven gear. After this signal is converted into a more precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then transmitted to the Engine Control Module (ECM). The ECM determines the vehicle speed based on the frequency of these pulse signals.
Citroen Vehicle:2013 Citroen,2012 Citroen,2011 Citroen,2010 Citroen,2009 Citroen,2008 Citroen,2007 Citroen,2006 Citroen,2005 Citroen,2004 Citroen,2003 Citroen,2002 Citroen,2001 Citroen,2000 Citroen,1999 Citroen,1998 Citroen,1997 Citroen,1996 Citroen,