OBD-II code · Powertrain (generic)
P074B Unable to Engage Gear 3
The transmission cannot engage gear 3 when it is commanded. The element that should apply for gear 3 — shift solenoid, clutch pack, or band — does not build or hold pressure, so the gear never locks in. Symptoms are slipping, no power transfer in that gear, or a forced limp mode. Causes: a failed shift solenoid, a worn clutch pack, or a valve-body or hydraulic-supply fault on the gear-3 circuit.
Is it safe to drive with P074B?
Usually safe for short trips, but don’t ignore it: the underlying fault can get more expensive over time.
Common causes
- Most likelyGear 3 circuit failed
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Hard
- DIY friendly
- Best left to a mechanic
- Typical labour
- 2–12 h
- Emissions test
- Usually unaffected
- Parts involved
- Transmission
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.