Powertrain
generic / SAE
P0973
Shift Solenoid A Control Circuit Low
TCM detects voltage on shift solenoid A control circuit below threshold, indicating short to ground or driver fault.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number9 / 73
Possible causes
- Short to ground high
- Connector pins corroded - high contact resistance low
- Harness chafing through insulation 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: hard
- DIY: shop recommended
- Estimated cost: 300–1500 €
- Estimated time: 1.5–6 h
- Component: shift solenoid a
- Component: wiring harness
- Component: tcm
- MIL / check engine light
Sources
References
sae:J2012