Dodge P1628: Sensor Reference Voltage 2 Circuit Erratic
Is your scanner showing Dodge P1628?
No worries. We'll show you what it means and how to deal with it.
Dodge P1628: Sensor Reference Voltage 2 Circuit Erratic
OVERVIEWWhat Does The Dodge P1628 Code Mean?
The Powertrain Control Module (PCM) contains two internal 5-Volt Sensor Supply sources; Reference Voltage 1 and Reference Voltage 2. Each of these 5-Volt Supply sources are split internally into parallel circuits to provide a 5.0 volt reference to multiple three wire sensors. For self protection, if the 5-Volt Supply circuit is shorted to ground or if one of the sensors is internally shorted, the PCM will turn off the 5-Volt Supply circuit until the next ignition cycle.
What Are The Potential Causes Of The Dodge P1628 Code?
- 5-volt supply circuit intermittently shorted to ground
- 5-volt supply circuit intermittently shorted to voltage
- 5-volt supply circuit intermittently open
- MAP sensor
- Camshaft position sensor
- Camshaft position sensor 2
- Accelerator pedal position (APP) sensor
- Powertrain control module (PCM)
Recommended Parts
Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:
>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> Engine Control Module - Direct Fit, Sold individually
>>> Manifold Absolute Air Pressure Map Sensor 56029405 AS88
>>> TAMKKEN 917-705 299810282 5073599AA 235-1232 Camshaft Position CAM Sensor
>>> 1998-2004 Dodge/Cummins 5.9L | Accelerator Pedal Position Sensor (APPS) | Alliant Power # AP63458
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Dodge P1628, DTCDECODE.
