Diagnostic article Generic OBD-II
P2C14: Exhaust sensor A circuit low is a powered-driver classification
Learn why P2C14’s low label concerns electrical behavior and not an exhaust camshaft position.
Read before applying this article
Documented application
2025 GM 25OBDG03B documented monitor only. Vehicle, engine and calibration applicability must be confirmed from the matching service information; no model fitment is inferred.
The code alone does not identify a failed part or establish that a vehicle is safe to drive. Confirm the vehicle, reporting module and applicable service procedure.
P2C14 identifies the low electrical result for exhaust profile-position sensor A. In the documented GM implementation, the output is commanded on and its voltage is evaluated against limits representing a short toward ground. The code does not mean that exhaust cam timing or profile-pin travel is too low.
Keep the two labels and the command distinct
The B camshaft designation identifies the exhaust side in this table, while A identifies the position-sensor channel. Neither designation establishes a physical cylinder or connector location without the actual vehicle mapping.
The controller’s classification corresponds to impedance below 0.5 Ω toward ground. The adjacent open and high electrical rows describe different path conditions; the high check is evaluated with the output off. A voltage without the associated command state cannot distinguish these tests reliably.
Use repeated eligible evidence
The source requires supply above 11 V, ignition in crank or run, diagnostic enablement and an on command. Four failures among five samples produce the result, separately from the listed one-trip reporting class.
A useful record retains the exhaust A-channel identity, command and supply conditions. These monitor criteria are not a pinout or an instruction to measure resistance on a live unknown circuit. The summary does not locate a ground path or choose between wiring, a connected component and the controller; proper circuit information is required.
Source and applicability
2025 GM 25OBDG03B documented monitor only. Vehicle, engine and calibration applicability must be confirmed from the matching service information; no model fitment is inferred. These criteria explain controller logic, not a complete repair procedure. 25OBDG03B, PDF page 909. 25OBDG03B, PDF page 911. 25OBDG03B, PDF page 912.
Article source documents
Source checks describe how the text was prepared; they do not certify a diagnosis or confirm compatibility with every vehicle using this code.
Original code reference
Dictionary definition
B Camshaft Profile Actuator Position Sensor A Circuit Low Bank 1
This definition retains its original catalog scope. The article above is limited to its explicitly documented application.
Reference scope
Generic OBD-II definition.
A manufacturer label does not establish the model, year, engine or module to which a diagnosis applies. Read the safety and diagnostic limits.
Definition source
- DTC Database: pinned community code definitions
Source checked · MIT