100% Free

No Scanner Needed

Carly logo
Prices

majaraven34

Fiesta Diesel DPF Exhaust Pressure Low

I have a technical issue concerning my 2001 Ford Fiesta, diesel engine, with about 120629 km. I've noticed a warning light, reduced engine power, smoke during acceleration, and a strong exhaust odor. The diesel particulate filter exhaust pressure seems abnormally low. Any ideas what this could be? I suspect the exhaust back pressure sensor might be bad.

Summary of the thread

The core problem is a technical issue with a 2001 Ford Fiesta diesel engine, characterized by a warning light, reduced engine power, smoke during acceleration, and a strong exhaust odor, with the diesel particulate filter (DPF) exhaust pressure being abnormally low. The suspected cause is a faulty exhaust back pressure sensor, which might prevent the car's computer from initiating DPF regeneration. Suggested solutions include confirming the sensor's condition and ruling out a clogged DPF or exhaust leak through a professional diagnostic check at a workshop.

Did this summary help you solve your problem?

4 comment(s)

philippmaier39

I had a similar problem with my Fiesta (also diesel). Same warning light, sluggish acceleration, and a whiff of fumes. Have you tried forcing a DPF regeneration? If the pressure sensor is faulty, the car's computer probably won't start the regeneration itself. That could explain the symptoms. What readings are you getting from the sensor?

majaraven34 (community.author)

I haven't forced a DPF regeneration, as I didn't want to make things worse with a potentially faulty sensor. I don't have the equipment to get precise sensor readings, but the diagnostic tool shows consistently low pressure, even under different engine loads. Do you think a defective exhaust back pressure sensor is most likely, or could it be something else?

philippmaier39

Based on your description, it sounds very similar to what I experienced. While I can't be 100% certain without proper diagnostics, a faulty pressure sensor is likely. Before replacing parts, I'd recommend a workshop to confirm the sensor and rule out a clogged DPF or exhaust leak.

majaraven34 (community.author)

Thanks for the help. I'll book a workshop for a diagnostic check of the exhaust system. The repair, including the new sensor and labor, will be 245€. Your insights helped a lot.

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

FORD

community_crosslink_rmh_model

FIESTA