P0473 is set when the voltage above maximum output voltage of DPS - is detected for more than 0.6 sec. or measured Differential pressure is above 500 hPa - the upper limiting value - for more than 1 sec. This code is due to 1) short beween power and signal circuit or 2) short to battery in signal circuit or 3) short to ground in ground circuit.
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
DPF DPS signal monitoring | 1. DPF DPS signal circuit short to power or open 2. Faulty DPF DPS | |
Enable Conditions |
•
IG "ON" | ||
Threshold Value |
•
Absolute value of DPF DPS signal greater than 500hPa | ||
Fail Safe | Fuel Cut |
•
NO | |
EGR Off |
•
NO | ||
Fuel Limit |
•
NO | ||
Check Lamp |
•
YES | ||
