Powertrain
generic / SAE
P073F
Unable to Engage Gear 1
The transmission cannot engage gear 1 when it is commanded. The element that should apply for gear 1 — 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-1 circuit.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number7 / 3F
Possible causes
- Gear 1 circuit failed high
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
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–3500 €
- Estimated time: 2–12 h
- Component: transmission
- MIL / check engine light
Sources
References
sae:J2012