Shift Solenoid Control Circuit Low Voltage
The P0982 code indicates that the Powertrain Control Module (PCM) has detected a low voltage condition in the control circuit of the shift solenoid 'A' (or specific solenoid depending on vehicle). This solenoid is responsible for directing transmission fluid to engage specific gears. A low voltage reading suggests a short to ground, open circuit, or faulty solenoid, which can cause erratic shifting, transmission slippage, or failure to shift.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or delayed shifting
- Transmission stuck in gear or limp mode
- Decreased fuel economy
2. Most Common Causes
- Faulty shift solenoid
- Damaged wiring or connector in solenoid circuit
- Low transmission fluid level or dirty fluid
- Internal transmission mechanical failure
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition.
Step 3: Visually check wiring and connectors for damage or corrosion.
Step 4: Test solenoid resistance and power/ground circuits with a multimeter.
Step 5: If wiring is OK, replace the shift solenoid.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause further transmission damage. The vehicle may enter limp mode, limiting speed and gear selection.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. Solenoid replacement is often $50-$150 for the part and $100-$250 for labor.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.