Fault Family System: Powertrain (P-Codes) 8 SAE Codes

HV Battery Pack Cell Thickness Sensor

Diagnostic & Technical Explanation

Code P2E6C (Hybrid/EV Battery Pack 'A' Cell Thickness) covers the mechanical swelling-detection sensor that monitors cell-group thickness in packs where physical swelling is used as an early warning of cell degradation, on pack A or B, flagging the reading itself or a circuit-level high/low/performance fault on the sensor. A genuinely swollen cell group is a safety-relevant finding; a sensor-only fault points at a failed strain gauge element or a corroded connector inside the module stack.

These 8 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 8 times.

Codes in this family (8)

Code	Definition	Repair coverage
P2E6C	Hybrid/EV Battery Pack 'A' Cell Thickness	3 ranked fixes
P2E6D	Hybrid/EV Battery Pack 'A' Cell Thickness Sensor Circuit High	3 ranked fixes
P2E6E	Hybrid/EV Battery Pack 'A' Cell Thickness Sensor Circuit Low	3 ranked fixes
P2E6F	Hybrid/EV Battery Pack 'A' Cell Thickness Sensor Circuit Performance	3 ranked fixes
P2E70	Hybrid/EV Battery Pack B Cell Thickness	3 ranked fixes
P2E71	Hybrid/EV Battery Pack B Cell Thickness Sensor Circuit High	3 ranked fixes
P2E72	Hybrid/EV Battery Pack B Cell Thickness Sensor Circuit Low	3 ranked fixes
P2E73	Hybrid/EV Battery Pack B Cell Thickness Sensor Circuit Performance	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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