P2767: Input/Turbine Speed Sensor Circuit No Signal
The P2767 code indicates that the Powertrain Control Module (PCM) has detected no signal from the input/turbine speed sensor, which monitors the rotational speed of the turbine shaft inside the torque converter. This sensor is critical for proper transmission shift timing and torque converter lockup. A loss of signal can result from a faulty sensor, damaged wiring, or internal transmission issues, leading to erratic shifting or limp mode.
1. Most Common Causes
- Faulty input/turbine speed sensor
- Damaged or shorted wiring/connectors
- Low transmission fluid level or contamination
- Internal transmission mechanical failure
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Erratic or harsh shifting
- Transmission stuck in limp mode (e.g., 2nd gear only)
- Poor acceleration or no torque converter lockup
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 sensor wiring and connector for damage or corrosion.
Step 4: Test sensor resistance and voltage output with a multimeter.
Step 5: If sensor and wiring are okay, check for internal transmission issues (e.g., reluctor ring damage).
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with P2767 can cause erratic shifting, reduced fuel economy, and potential internal transmission damage. Limp mode may limit speed, but continued driving could worsen the problem.
How much does it cost to fix?▼
Repair costs typically range from $150 to $400, including parts and labor. A sensor replacement is usually $100-$200, while wiring repairs or transmission diagnostics can increase the cost.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.