Vehicle speed is sent from ABS(VDC) module. ABS(VDC) calculates the vehicle speed with the wheel speed sensor. Also converts it into the digital signal and sends it to ECM. When DTC P2159 occurs, check the ABS system error first and then check the engine system.
If the vehicle speed signal is below 1.0 Km/h during 2 sec under enable conditions, ECM sets P2159.
Item
Detecting Condition
Possible Cause
DTC Strategy
Signal check (implausible)
Poor connection
Open or short in signal circuit
ABS/ESP Module
Case1
Enable
Conditions
Engine speed > 3000rpm
Engine load > 49.5%
Coolant temperature > - 6?
Gear position : D or R
Threshold Value
Vehicle speed signal during fuel injection < 1.0 kph
Case2
Engine speed : 1520~3520rpm
Vehicle speed signal during fuel cut-off < 1.0 kph
Diagnostic Time
2 sec
MIL ON Condition
3 driving cycle