P2752: Intermediate Shaft Speed Sensor C Circuit Intermittent
The P2752 code indicates an intermittent fault in the circuit of the intermediate shaft speed sensor C, which is part of the transmission's input/output speed monitoring system. This sensor measures the rotational speed of the intermediate shaft, and the PCM uses this data for shift timing and torque converter lockup. An intermittent signal can cause erratic shifting, harsh engagement, or limp mode. Common causes include a faulty sensor, damaged wiring, poor electrical connections, or low transmission fluid.
1. Most Common Causes
- Loose, corroded, or retracted pins in the sensor connector
- Wiring harness damage from chafing, intermittent short to ground or voltage, or open circuit
- Faulty intermediate shaft speed sensor 'C' due to intermittent internal failure
- Damaged, worn, or contaminated tone wheel on the intermediate shaft
- Intermittent TCM or PCM failure (less common)
- External electromagnetic interference affecting signal integrity
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Erratic or harsh shifting
- Transmission stuck in limp mode
- Delayed engagement or slipping
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect wiring and connectors for damage, corrosion, or loose pins.
Step 3: Test sensor resistance and compare to manufacturer specs.
Step 4: Check transmission fluid level and condition.
Step 5: Clear codes and test drive to see if code returns.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the transmission may shift erratically or enter limp mode, potentially causing further damage.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for a DIY sensor replacement, or $150 to $400 if professional labor is required.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.