Diagnostic article Generic OBD-II
P2027: the high-voltage label is paired with a current criterion in Audi's chart
Audi's CAED P2027 row lists signal current above 2.20 A despite the high-voltage wording, so the quantity must be preserved when interpreting the monitor.
Read before applying this article
Documented application
Audi 2014 A6/S6 Quick Reference Specification Book, September 2013, Engine Code CAED, DTC chart. Thresholds only describe this documented monitor; not universal across other makes or engines.
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.
P2027 carries a high-voltage label for the EVAP fuel-vapor temperature-sensor circuit. Audi's CAED quick-reference row, however, lists signal current above 2.20 A as its criterion. This article preserves that distinction rather than silently changing the number into volts.
The label and measurement quantity are different
A code title is not a substitute for reading the criteria column. As diagnostic interpretation, comparing a voltage measurement with a limit expressed in amperes would not evaluate the published condition. The actual circuit and professional procedure are needed to determine how this current criterion is assessed.
The row also does not provide a vapor-temperature value or establish that the tank is too hot. It concerns electrical monitoring, not a direct thermal diagnosis.
Confirm the applicable diagnostic information
The source is a quick-reference table, with no connector assignment, test-equipment setup or complete isolation sequence. Confirm the CAED repair information before applying the threshold to a real measurement. This article does not supply a direct-current probing instruction or infer a failed sensor from the generic label alone. The stated criterion is scoped to Audi's 2014 A6/S6 CAED section, and other engines must use their own documented evaluation.
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
EVAP Fuel Vapor Temperature Sensor Circuit High Voltage
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