Powertrain
generic / SAE
P273D
Gear Shift Control Module A Supply Voltage High
The gear shift control module A reports a supply voltage above the operating range.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number7 / 3D
Possible causes
- Alternator regulator failed to limit output high
- Load dump transient after disconnecting a heavy load low
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: 150–1000 €
- Estimated time: 1–3.5 h
- Component: gear shift module a
- Component: charging system
- MIL / check engine light
Sources
References
sae:J2012