What does code P2D5A mean?

Q: What does code P2D5A mean?

Reductant Level Sensor A/B Correlation. P2D5A indicates that the powertrain control module (PCM) has detected a disagreement between two redundant reductant level sensor signals, typically Sensor A and Sensor B, which are used to monitor the diesel exhaust fluid (DEF) tank level. The computer compares the two readings and sets this code when the correlation between them falls outside the expected range for a calibrated period.

DTC codes / P2Dxx · Hybrid propulsion / P2D5A

P2D5AReductant Level Sensor A/B Correlation

P2D5A indicates that the powertrain control module (PCM) has detected a disagreement between two redundant reductant level sensor signals, typically Sensor A and Sensor B, which are used to monitor the diesel exhaust fluid (DEF) tank level. The computer compares the two readings and sets this code when the correlation between them falls outside the expected range for a calibrated period.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.