P246B Possible Causes
- Fuel system concerns
- Turbocharger system concerns
- Exhaust leaks
- Oxidation catalytic converter (OC)
- Aftermarket exhaust accessories or performance modifications
How to Fix Code P246B
Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P246B Possible Symptoms
Engine light on (or service engine soon warning light)
P246B Meaning
The Powertrain Control Module (PCM) monitors the conditions required for diesel particulate filter regeneration. The test fails when the diesel particulate filter regeneration level is not at the target reduction after 13 minutes of active regeneration.