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EV Tyre pressure monitoring Intermittent Fault Diagnostic Guide
The fault comes and goes, often on rough roads.
The issue described here is a common one on electric vehicles: The fault comes and goes, often on rough roads (Intermittent Fault). It is worth checking the simple and low-cost causes first, because a loose connector or a tired 12V supply can produce exactly the same symptom as a much more expensive fault. Work through this guide in order so you can rule the obvious things out quickly.
Quick Symptom Check
| Symptom | Likely fault | Test |
|---|---|---|
| The fault comes and goes, often on rough roads | Failing part in the circuit | Multimeter + visual |
| Persists after reset | Blocked or restricted flow | Module scan |
| Worsens over time | Sensor reading inaccurate | Inspection |
- Failing part in the circuit accounts for most of the cases.
- Blocked or restricted flow is the second most likely option.
- Check the cheap causes before replacing a large component.
Diagnostic Steps
- Isolate the concerned area and inspect the fuse and connector state.
- Measure voltage and continuity at the component with the multimeter.
- Test the component response against the manufacturer reference values.
- Replace the damaged part and clear the stored codes.
Likely Causes
| Cause | Likelihood | Fix cost |
|---|---|---|
| Failing part in the circuit | High | Gen 150 |
| Blocked or restricted flow | Medium | Gen 40 |
| Sensor reading inaccurate | Low | Gen 70 |
When to Seek a Professional
If the problem does not clear after the steps above, or if it touches the high-voltage pack, the contactors or the drive inverter, stop and book the vehicle in with a certified EV technician.
Verdict
EV Tyre pressure monitoring Intermittent Fault Diagnostic Guide is most often the result of a simple connector or wiring fault. Run the cheapest test first and confirm the reading before you buy any parts.
Tools you'll need
Related error codes
P0AA6
P0B30