Hydraulic Oil Temperature Sensor Circuit Malfunction
The P0937 code indicates a problem in the hydraulic oil temperature sensor circuit, typically found in vehicles with automatic transmissions or hydraulic systems. The sensor monitors fluid temperature to prevent overheating and ensure proper operation. A fault in the circuit can cause incorrect temperature readings, leading to transmission shifting issues or potential damage.
1. Symptoms You Will Notice
- Check Engine Light illuminated
- Transmission shifting harsh or erratic
- Transmission overheating or slipping
- Reduced fuel economy
2. Most Common Causes
- Faulty hydraulic oil temperature sensor
- Open or shorted wiring in the sensor circuit
- Poor electrical connection at the sensor or PCM
- Damaged connector pins or corrosion
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the sensor and wiring for damage or corrosion.
Step 3: Test sensor resistance with a multimeter and compare to specifications.
Step 4: Check voltage and ground at the sensor connector with the ignition on.
Step 5: If sensor and wiring are good, test the PCM for proper signal reception.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the transmission may overheat or shift improperly, leading to costly damage.
How much does it cost to fix?▼
Typically $50-$150 for parts and labor, but can be higher if wiring repairs or PCM replacement is needed.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.