Fault Family System: Powertrain (P-Codes) 4 SAE Codes

Battery Charger Charge Sequence Signal

Diagnostic & Technical Explanation

Code P2E8C (Battery Charger B Charge Sequence Signal 1 Circuit High) covers the low-voltage handshake signals (numbered 1 and 2) the onboard charger and vehicle control module exchange to step through a charge session's startup and shutdown sequence, distinct from the control pilot and proximity circuits shared with the EVSE. The ECM flags the signal reading high or low outside its expected window at a given sequence stage. Causes are a corroded connector between the charger and control module, chafed low-voltage sequencing wiring, or an internal charger fault that never asserts the expected signal.

These 4 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 4 times.

Codes in this family (4)

Code	Definition	Repair coverage
P2E8C	Battery Charger B Charge Sequence Signal 1 Circuit High	3 ranked fixes
P2E8D	Battery Charger B Charge Sequence Signal 1 Circuit Low	3 ranked fixes
P2E8E	Battery Charger B Charge Sequence Signal 2 Circuit High	3 ranked fixes
P2E8F	Battery Charger B Charge Sequence Signal 2 Circuit Low	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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