System: Powertrain (P-Code)
SAE Standard (Generic)
Family: PM Sensor Temperature Circuit
Code P24CA: Particulate Matter Sensor Temperature Circuit Intermittent
Diagnostic & Technical Explanation
Code P24CA (Particulate Matter Sensor Temperature Circuit Intermittent) sets when the ECM sees an open, shorted, out-of-range, or intermittent signal from the temperature sensor integrated into the particulate matter sensor assembly, used to confirm the sensing element has reached the temperature needed for an accurate soot reading. Because this thermistor lives inside the sealed PM sensor body, causes are limited to the sensor's internal element, its connector, or the wiring back to the ECM.
First-listed procedure
Rank #1
Clean PM sensor temperature circuit connector
Easy DIY
This is the first procedure in the authored
consideration order, not a measured cause likelihood. Execute it only when its prerequisites
and diagnostic findings support it. Its cost and labor estimates (where known), the step-by-step procedure and the
remaining 2 procedure(s) are in the licensed dataset. Ordering context.
Full family: PM Sensor Temperature Circuit
What this page does not show
This page publishes the fault mechanism and the code index. The licensed dataset adds, for
every one of the 15,886 codes, the full authored repair set (56,729 procedures in total)
with the fields deliberately withheld here:
- Procedures 2..n after the first-listed procedure
- Aftermarket parts cost ranges in USD (
est_parts_cost_min/max_usd)
- Professional labor-hour estimates (
est_labor_hours)
- Step-by-step diagnostic and repair instructions
- Replacement-part mappings and catalog lookups
- 6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)