Transmission Fluid Level Sensor Circuit Low
The P070C code indicates that the transmission control module (TCM) has detected a low voltage or resistance in the transmission fluid level sensor circuit. This sensor monitors fluid level and temperature; a low circuit condition can be caused by a faulty sensor, damaged wiring, poor electrical connections, or low transmission fluid. If left unaddressed, it may lead to incorrect fluid level readings, potential transmission damage, or shifting issues.
01. Most Common Causes
- Faulty transmission fluid level sensor
- Damaged or corroded wiring/connectors in the sensor circuit
- Low transmission fluid level
- Internal transmission control module (TCM) failure
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission shifting erratically or slipping
- Transmission overheating
- Fluid leaks under the vehicle
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect transmission fluid level and condition; top off if low.
Step 3: Visually check wiring and connectors for damage, corrosion, or loose connections.
Step 4: Test the fluid level sensor resistance and compare to manufacturer specs.
Step 5: If sensor and wiring are okay, test TCM for proper voltage output.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Low fluid or sensor issues can cause transmission damage or failure. Have it diagnosed promptly.
How much does it cost to fix?▼
Typically $50-$150 for diagnosis and sensor replacement, but costs vary by vehicle and labor rates.