Powertrain, generic (extended)

P24DA Particulate Matter Sensor Exhaust Sample Error Bank 1

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

P24DA checks that the particulate matter sensor actually samples exhaust gas, which is how the system detects a sensor that has been pulled out, sits in a blocked protection tube or is mounted wrongly. Ford's 2023 diesel summary runs it once per drive in protective heating mode and fails it if the summed sensor voltage change during exhaust flow changes stays under 0.5 V, over about 3 minutes. GM's 25OBDG04A table watches filtered heater power, sets the code below 1.66 and rates it Type A, so the lamp comes on after one trip. Bulletin 18-2225 lists P24DA among the codes cured by a new sensor on 2017–2018 Super Duty diesels. Because a sensor outside the exhaust would hide a failed filter, the code counts as emissions-relevant; P2002 reports the filter itself.

Likely causes

Protection tube clogged
Sensor removed from the exhaust or installed wrongly
Sensor no longer responding to exhaust flow

Symptoms

  • Malfunction indicator lamp on
  • Particulate filter monitor does not complete

Repair estimate

DifficultyMediumDIY possible
Parts and labour€150–700
Time0.5–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

particulate matter sensor

Related codes

P24AEP24AFP24B4P2002

References: fordservicecontent.com, gsi.ext.gm.com, static.nhtsa.gov.