Fuel Level Sensor B Range / Performance
Your car's fuel tank level sensor B isn't sending reliable readings to the engine computer. Think of it like a broken fuel gauge that can't accurately tell how much gas is in your tank.
The ECM monitors the voltage signal from fuel level sensor B as the float moves up and down in the tank. The sensor should produce a smooth voltage sweep from empty to full. When the voltage reading falls outside expected parameters or shows excessive noise, the ECU logs this fault.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Sensor voltage sweep | 0.5V (empty) to 4.5V (full), smooth transition | Voltage erratic, stuck, or outside range |
| Signal rate of change | Gradual voltage transition | Rapid jumps or no movement for extended period |
Code P1352 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.
Once the fault is repaired, P1352 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.