Data Erroneous or Missing
The control unit received corrupted or incomplete data from a sensor or module.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The computer isn't getting the right information from one of the sensors or modules, which could be due to a bad connection or failing part.
What the computer is actually seeing
The engine control unit (ECU) sees inconsistent or missing data where it expects valid sensor readings, often causing performance issues.
What a healthy reading looks like
Expected voltage from sensors is typically between 0.5V to 4.5V, and data packets should be transmitted successfully within 1-5ms intervals.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 11. Check wiring and connectors related to the sensor for damage or corrosion.
- 22. Inspect fluid levels and any related components to ensure normal operation. If any fluids are low, top them off or resolve leaks.
- 33. Use a scan tool to examine live data; check the readings from the sensors for consistency with expected values.
- 44. If data is inconsistent, swap the suspect sensor with a known good one.
- 55. Clear the code and run the vehicle to see if the code returns. If it does, proceed to check the ECU for faults or software updates.
Common causes
- Bad wiring or connectors between the sensor and ECU
- Faulty sensor sending incorrect data
- Issues with the ECU software or programming
- Corrosion at connector terminals
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's generally safe but drive with caution as performance may be affected.
Will this code come back after clearing?
Yes, if the underlying issue isn't fixed, it will return.
Why does this code show up with other SPNs?
It often indicates related sensor or communication issues that affect engine performance.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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