Fault Family System: Powertrain (P-Codes) 5 SAE Codes

PM Sensor Temperature Circuit

Diagnostic & Technical Explanation

Code P24C6 (Particulate Matter Sensor Temperature Circuit) 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.

These 5 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 5 times.

Codes in this family (5)

Code	Definition	Repair coverage
P24C6	Particulate Matter Sensor Temperature Circuit	3 ranked fixes
P24C7	Particulate Matter Sensor Temperature Circuit Range/performance	3 ranked fixes
P24C8	Particulate Matter Sensor Temperature Circuit Low	3 ranked fixes
P24C9	Particulate Matter Sensor Temperature Circuit High	3 ranked fixes
P24CA	Particulate Matter Sensor Temperature Circuit Intermittent	3 ranked fixes

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)

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