Mitsubishi Fault Code
Free · no signupP2452
DPF light flashing; Constant regens; Limp mode.
System
Not specified
Symptom
DPF light flashing; Constant regens; Limp mode.
Diagnosis & fix steps
DPF Differential Pressure Sensor Circuit.
LOGIC: The ECU detects an electrical fault or a "logical" error in the pressure sensor that monitors the DPF soot load.
ACTION: 1. Inspect the two rubber hoses going to the DPF sensor.
2. Check for soot blockage in the metal pipes.
3. Check for 5V ref at sensor.
FIX: Replace DPF Differential Pressure Sensor or clear the blocked sensor pipes.
Red Seal field insights
Mud-wasps or debris often clog the atmospheric vent on these sensors in Asian markets. Ensure the hoses are flexible; if they are hard and brittle, they will crack and cause false pressure readings.
Same code keeps coming back?
That's a program problem, not a part problem. Book a 30-minute uptime review with Grant, a Red Seal Heavy Duty Technician.
Read before you touch anything
- This is general reference information, not a repair manual. It is for trained, qualified technicians.
- Fault codes, meanings and procedures vary by model, serial number and software version. Confirm the code and the procedure against the manufacturer's service manual before acting.
- Follow the OEM service manual, torque specs and your site's safety procedures: lockout/tagout, block raised equipment, relieve hydraulic, fuel and air pressure, and let hot systems cool.
- You use this information at your own risk. Adventure Mechanical and AM Fleet Integrity accept no liability for damage, injury, downtime or loss arising from its use.
- Not affiliated with or endorsed by any manufacturer. Brand names are used only to identify the equipment a code applies to.
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Start your free trialRelated Mitsubishi fault codes
- P2454DPF Light Flashing / Check Engine
- P2413Frequent DPF warning; Excessive fuel consumption; Power derate.
- P1496EGR Warning / Limp Mode Active
- P1298Black Smoke / Heavy Turbo Lag
- P0638Sudden loss of throttle; Engine stuck at high idle (Limp Mode); Throttle icon on dash.
- P0502Speedometer reads zero; "ABS" light on; Transmission won't shift out of 1st gear.
- P0500Speedo Inop / Erratic Idling
- P0403 / P0405Rough idle; "Check Engine" and "VSC" lights; Engine surging.
- P0299Severe Turbo Lag / Power Loss Climbing Grades
- P0193Loud Engine Knock / Rail Pressure Alarm