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

Humidity Sensor Circuit

Diagnostic & Technical Explanation

Code P00F2 (Humidity Sensor Circuit/Open) sets when the ECM sees an open, shorted, or out-of-range signal from the ambient humidity sensor used to correct combustion and emissions calculations. Causes are a corroded connector, a failed sensor element, or chafed harness wiring.

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
P00F2	Humidity Sensor Circuit/Open	3 ranked fixes
P00F3	Humidity Sensor Circuit Range/Performance	3 ranked fixes
P00F4	Humidity Sensor Circuit Low	3 ranked fixes
P00F5	Humidity Sensor Circuit High	3 ranked fixes
P00F6	Humidity Sensor Circuit Intermittent/Erratic	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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