Fault Family System: Powertrain (P-Codes) 27 SAE Codes

Transmission Range Control Circuit

Diagnostic & Technical Explanation

Code P07E8 (Transmission Range Control A Circuit/Open) sets when the TCM/range-control module detects an open circuit, out-of-range voltage, a stuck condition, or a communication fault while processing the driver's shift-by-wire gear selection request. Causes are a failed range-control actuator, a corroded module connector, low module supply voltage, or damaged network wiring between the range control module and TCM.

These 27 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 27 times.

Codes in this family (27)

Code	Definition	Repair coverage
P07E8	Transmission Range Control A Circuit/Open	4 ranked fixes
P07E9	Transmission Range Control A Circuit Performance	4 ranked fixes
P07EA	Transmission Range Control A Circuit Low	4 ranked fixes
P07EB	Transmission Range Control A Circuit High	4 ranked fixes
P07EC	Transmission Range Multi-Function Select Circuit	4 ranked fixes
P07ED	Transmission Range Multi-Function Select Circuit Stuck	4 ranked fixes
P07EE	Transmission Range Multi-Function Select Circuit Range/Performance	4 ranked fixes
P07EF	Transmission Range Multi-Function Select Circuit Low	4 ranked fixes
P07F0	Transmission Range Multi-Function Select Circuit High	4 ranked fixes
P07F2	Transmission Range Control Module Communication Circuit	4 ranked fixes
P07F3	Transmission Range Control Module Communication Circuit Low	4 ranked fixes
P07F4	Transmission Range Control Module Communication Circuit High	4 ranked fixes
P07F5	Transmission Range Control Module System Voltage Low	4 ranked fixes
P272A	Transmission Range Select Motor Control Circuit	4 ranked fixes
P272B	Transmission Range Select Motor Control Circuit Current Too High	4 ranked fixes
P27E7	Transmission Range Control B Circuit/Open	4 ranked fixes
P27E8	Transmission Range Control B Circuit Performance	4 ranked fixes
P27E9	Transmission Range Control B Circuit Low	4 ranked fixes
P27EA	Transmission Range Control B Circuit High	4 ranked fixes
P27EB	Transmission Range Control A Position Sensor/Switch Circuit/Open	4 ranked fixes
P27EC	Transmission Range Control A Position Sensor/Switch Circuit Range/Performance	4 ranked fixes
P27ED	Transmission Range Control A Position Sensor/Switch Circuit Low	4 ranked fixes
P27EE	Transmission Range Control A Position Sensor/Switch Circuit High	4 ranked fixes
P27EF	Transmission Range Control B Position Sensor/Switch Circuit/Open	4 ranked fixes
P27F0	Transmission Range Control B Position Sensor/Switch Circuit Range/Performance	4 ranked fixes
P27F1	Transmission Range Control B Position Sensor/Switch Circuit Low	4 ranked fixes
P27F2	Transmission Range Control B Position Sensor/Switch Circuit High	4 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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