2019 GMC Terrain diesel DTC P20B9 Reductant heater1 control circuit
Sorry for stupid question but where i can find that heater cant find any info about it .
That code is for the tank heater that is inside the pump/module assembly.
Component Testing:
Reductant Tank Heater
Ignition OFF, disconnect the harness connector at the A38 Reductant Pump and Sensor Assembly.
Test for 1–3 Ω between terminals 9 and 11 of the A38 Reductant Pump and Sensor Assembly.
If not within 1–3 Ω
Replace the A38 Reductant Pump and Sensor Assembly.
If within 1–3 Ω
Test for infinite resistance between each terminal and the A38 Reductant Pump and Sensor Assembly housing/case.
terminal 9
terminal 11
If less than infinite resistance
Replace the A38 Reductant Pump and Sensor Assembly.
costumer brought this car back
he said he replaced Reductant Pump and Sensor Assembly.
no errors when scan it but warning on dash
servise emission system how can i restet that whats the proper procedure ?
