What Does P070C Mean?
The transmission fluid level sensor is reporting a voltage below the expected minimum threshold. This indicates a potential open circuit, short to ground, or a failed sensor in the transmission fluid level monitoring system. The driver may notice erratic shifting, a transmission warning light, or the inability for the TCM to accurately monitor fluid level.
Common Causes
35%
Faulty transmission fluid level sensor (internal short or open circuit)
30%
Damaged or corroded wiring/connector between sensor and TCM
20%
Low transmission fluid level causing sensor to read below range
10%
TCM internal fault or ground issue
5%
Short to ground in the sensor signal circuit
Diagnostic Steps
1
Check the transmission fluid level using the manufacturer's recommended procedure (engine running, correct temperature). Compare actual level to what the scan tool reports from the sensor.
2
Access the transmission fluid level sensor connector and measure voltage with KOEO. Expected reference voltage is typically 4.5-5.0V. A reading near 0V confirms a short to ground or open reference circuit.
3
With the connector disconnected, measure resistance across the sensor terminals. Compare to manufacturer spec (typically 50-200 ohms depending on fluid level). An open reading (OL) indicates a failed sensor.
4
Inspect the wiring harness from the sensor to the TCM for chafing, corrosion, or damage, especially where it routes near exhaust or transmission components.
5
Measure continuity and resistance on the signal wire from the sensor connector back to the TCM connector to rule out a wiring break or short to ground.
Estimated Repair Cost
$100 - $450
Parts + labor, varies by vehicle and location
The transmission fluid level sensor is reporting a voltage below the expected minimum threshold. This indicates a potential open circuit, short to ground, or a failed sensor in the transmission fluid level monitoring system. The driver may notice erratic shifting, a transmission warning light, or th...
The most common cause of P070C (Transmission Fluid Level Sensor Circuit Low) is: Faulty transmission fluid level sensor (internal short or open circuit)
Typical repair costs for P070C range from $100 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Driving is generally safe short-term, but the vehicle cannot accurately monitor transmission fluid level. If the fluid is actually low, continued driving risks overheating and permanent transmission damage. Have it inspected promptly.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P070C to identify the root cause.
OBDHut Mobile App
Scan codes directly from your car with the OBDHut app.
Coming Soon
Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
