What Does P1361 Mean?
The Top Dead Center (TDC) sensor for cylinder 1 is experiencing an intermittent signal interruption. This causes timing errors and affects ignition and fuel injection synchronization.
Common Causes
35%
Intermittent connection at TDC sensor connector
30%
Damaged or chafed wiring harness to TDC sensor
20%
Failing TDC sensor with internal intermittent fault
10%
Worn reluctor ring or tone wheel on camshaft
5%
Excessive sensor air gap due to mounting looseness
Diagnostic Steps
1
Step 1: Wiggle-test sensor connector and wiring while monitoring live data for signal dropout
2
Step 2: Inspect sensor connector for corrosion, moisture, or loose terminal fit
3
Step 3: Measure sensor resistance and compare to specifications (typically 200-900 ohms)
4
Step 4: Check sensor mounting security and verify proper air gap
5
Step 5: Monitor sensor signal with oscilloscope during engine operation to capture intermittent faults
Estimated Repair Cost
$120 - $450
Parts + labor, varies by vehicle and location
The Top Dead Center (TDC) sensor for cylinder 1 is experiencing an intermittent signal interruption. This causes timing errors and affects ignition and fuel injection synchronization.
The most common cause of P1361 (Intermittent Interruption In TDC 1 Sensor Circuit) is: Intermittent connection at TDC sensor connector
Typical repair costs for P1361 range from $120 to $450, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Engine may stumble, hesitate, or stall intermittently during operation. Can create unpredictable performance issues while driving.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P1361 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
Ignition/Fuel System
Difficulty
Type
Manufacturer
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
