OBD-II code · Powertrain (generic, extended)
P2748 Intermediate Shaft Speed Sensor B Circuit Intermittent
The intermediate shaft speed sensor B signal jumps or drops out intermittently. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Is it safe to drive with P2748?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelySensor connector not fully seated
- PossibleHarness chafed against transmission housing
- Less likelyConnector with intermittent contact under vibration
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Usually unaffected
- Parts involved
- Intermediate Shaft Speed Sensor B, Wiring Harness
Related codes
- P0794Intermediate Shaft Speed Sensor A Circuit Intermittent
- P2752Intermediate Shaft Speed Sensor C Circuit Intermittent
- P2745Intermediate Shaft Speed Sensor B Circuit
- P2746Intermediate Shaft Speed Sensor B Circuit Range/Performance
- P2747Intermediate Shaft Speed Sensor B Circuit No Signal
- P2749Intermediate Shaft Speed Sensor C Circuit
- P274ATransmission Fluid Temperature Sensor C Circuit
- P274BTransmission Fluid Temperature Sensor C Circuit Range/Performance
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.