Jeep P1691: Reductant Injection Valve Circuit High - Positive Side
Is your scanner showing Jeep P1691?
No worries. We'll show you what it means and how to deal with it.
Jeep P1691: Reductant Injection Valve Circuit High - Positive Side
OVERVIEWWhat Does The Jeep P1691 Code Mean?
The Diesel Exhaust Fluid (DEF) Injector is mounted to the decomposition tube at the inlet of the Selective Catalytic Reduction (SCR) Catalyst. The Powertrain Control Module (PCM) sends a Pulse Width Modulated (PWM) signal to DEF Injector to vary the amount of fluid sprayed into the exhaust stream. The PCM will illuminate the MIL lamp after this diagnostic runs and fails. This is a two Trip Fault.
What Are The Potential Causes Of The Jeep P1691 Code?
- DEF injector positive circuit shorted to voltage
- DEF injector positive circuit open/high resistance
- DEF injector
- Powertrain control module
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
>>> Twippo 372Pcs Waterproof Wire Connectors Kit
>>> Diesel Exhaust Fluid Inject
Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!
Reference Sources
Jeep P1691, DTCDECODE.
