What does code P2748 mean?

Q: What does code P2748 mean?

Intermediate Shaft Speed Sensor 'B' Circuit Intermittent. P2748 indicates that the powertrain control module (PCM) has detected an intermittent fault in the electrical circuit for the intermediate shaft speed sensor 'B', which is typically a second speed sensor on the transmission output or transfer case. The PCM monitors the sensor signal for expected pulses and flags this code when the signal drops out or becomes erratic for brief, repeated periods rather than failing completely.

DTC codes / P27xx · Transmission / P2748

P2748Intermediate Shaft Speed Sensor 'B' Circuit Intermittent

P2748 indicates that the powertrain control module (PCM) has detected an intermittent fault in the electrical circuit for the intermediate shaft speed sensor 'B', which is typically a second speed sensor on the transmission output or transfer case. The PCM monitors the sensor signal for expected pulses and flags this code when the signal drops out or becomes erratic for brief, repeated periods rather than failing completely.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaTransmission

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