[BBeck]

Originally Posted by mopartech

I would bet its from the p2000 code, do you idle your truck?

P061A-ETC LEVEL 2 TORQUE PERFORMANCE

Possible causes:
SOFTWARE REVISION/TSBS
COOLANT TEMPERATURE SENSOR
EXHAUST MANIFOLD PRESSURE SENSOR
INTAKE MANIFOLD PRESSURE SENSOR
BRAKE SWITCH
ENGINE OR FUEL MODIFICATIONS THAT EXCEED OEM SPECIFICATIONS
ACCELERATOR PEDAL POSITION ENSOR
ENGINE CONTROL MODULE (ECM)

P2000-NOX ABSORBER EFFICIENCY BELOW THRESHOLD - BANK 1

Possible causes:
MASS AIR FLOW SENSOR
O2 SENSORS
EGR LEAKS
BOOST SYSTEM LEAKS
USE OF HIGH SULFUR FUEL
TAMPERING OR REMOVAL OF THE NAC
DEGRADED OR POISONED NAC
EXHAUST, EGR OR INTAKE LEAKS

No, I don't idle

I recently filled up with B5 a couple of days ago and wonder if the truck just can't handle biodiesel. I have used biodiesel in the past with no issues. The dealer has cleaned the sensors and flashed the system as needed as well.

I always use ULSD as well.