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

Turbo Temperature Sensor Circuit

Diagnostic & Technical Explanation

Code P2B6E (Turbocharger/Supercharger A Temperature Sensor Circuit) covers the temperature sensor mounted at the named turbocharger or supercharger (A or B) that protects the unit's bearings and housing from thermal damage after a hard run. The ECM flags an open, shorted, out-of-range, or implausible signal. Causes are a sensor element degraded by sustained exhaust heat, a connector pin corroded from underhood heat cycling, or damaged wiring routed near the exhaust.

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
P2B6E	Turbocharger/Supercharger A Temperature Sensor Circuit	3 ranked fixes
P2B6F	Turbocharger/Supercharger A Temperature Sensor Circuit Low	3 ranked fixes
P2B70	Turbocharger/Supercharger A Temperature Sensor Circuit High	3 ranked fixes
P2B71	Turbocharger/Supercharger A Temperature Sensor Circuit Range/Performance	3 ranked fixes
P2B8F	Turbocharger/Supercharger B Temperature Sensor Circuit	3 ranked fixes
P2B90	Turbocharger/Supercharger B Temperature Sensor Circuit Low	3 ranked fixes
P2B91	Turbocharger/Supercharger B Temperature Sensor Circuit High	3 ranked fixes
P2B92	Turbocharger/Supercharger B Temperature Sensor Circuit Range/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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