Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Verify a condition does not exist with the component: B154 Diesel Particulate Filter Exhaust Differential Pressure Sensor
- Modified.
- Visible Damage
- Loose/Incorrect installation
- Hoses/Lines - Incorrect routing/Kinked/Leaking/Restricted
- If a condition exists
Repair as necessary
- Go to next step: If no condition exists
- Verify the following conditions do not exist:
- Charge Air Cooler/Induction System - Leaking - Refer to: Charge Air Cooler Diagnosis .
- Exhaust System - Leaking - Refer to: Exhaust Leakage .
- Fuel - Contaminated - Refer to: Contaminants-in-Fuel Diagnosis .
- B75C Multifunction Intake Air Sensor - Visible Damage
- B75C Multifunction Intake Air Sensor - Skewed/Slow Response/Stuck - Refer to: DTC P0101 .
- B154 Diesel Particulate Filter Exhaust Differential Pressure Sensor - Skewed
- B131 Exhaust Temperature Sensor - Incorrect installation/Loose/MalfunctionFailed, intermittent, improperly installed or loose B131 Exhaust Gas Temperature sensors will cause inaccuracies in the soot model and cause this DTC to set.
- Engine - Mechanical Condition - Refer to: Symptoms - Engine Mechanical .
- If a condition exists
Repair as necessary
- Go to next step: If no condition exists
- Perform the scan tool function: Particulate Filter Service Regeneration
.
- If the DPF service regeneration fails with the message "Soot Accumulation Out of Range"
Replace the exhaust particulate filter.
- Go to next step: If the DPF service regeneration completes
- If the DPF service regeneration fails with the message "Soot Accumulation Out of Range"
- All OK.
NOTE:
Pinhole size leaks in the induction system or exhaust system may cause this DTC to set. Verifying the integrity of these systems is critical to a proper diagnosis. The Full System Air Leak Test must be performed first, then the Induction System Smoke Test must be performed in order to identify any leaks that may exist.