Fault Family System: Powertrain (P-Codes) 3 SAE Codes

Fuel Cooler Pump Circuit

Diagnostic & Technical Explanation

Code P008C (Fuel Cooler Pump Control Circuit/Open) sets when the ECM detects an open circuit or out-of-range current while driving the auxiliary fuel cooler circulation pump used to keep returned fuel temperature in range. Causes are a seized or failed pump motor, a blown fuse, or damaged wiring between the ECM/relay and the pump.

These 3 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 3 times.

Codes in this family (3)

Code	Definition	Repair coverage
P008C	Fuel Cooler Pump Control Circuit/Open	3 ranked fixes
P008D	Fuel Cooler Pump Control Circuit Low	3 ranked fixes
P008E	Fuel Cooler Pump Control Circuit High	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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