Powertrain
generic / SAE
P273C
Gear Shift Control Module A Supply Voltage Low
The shift-by-wire gear shift control module A reports a supply voltage below the operating range.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 3C
Possible causes
- Weak battery sags voltage under load high
- Alternator output below regulation point medium
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: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 0.8–3 h
- Component: gear shift module a
- Component: charging system
- Component: battery
- MIL / check engine light
Sources
References
sae:J2012