Axle Load - Override Active
The axle load measurement is reporting an active override condition.
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 system is indicating that the axle load sensor readings are being overridden, meaning the typical weight data isn't being used and something else is controlling what the system thinks the load is.
What the computer is actually seeing
The controller recognizes an override condition on the axle load sensor, which means the expected input values are not being utilized, potentially leading to inaccurate load calculations.
What a healthy reading looks like
Axle load sensors typically send voltage signals between 0.5V (no load) to 4.5V (full load). Override conditions can disrupt these ranges.
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. Inspect the wiring and connectors for the axle load sensor; look for frays, breaks, or corrosion. If found, repair or replace as necessary. Decision Point: Is wiring intact? Yes - go to step 2, No - repair wiring.
Common causes
- Faulty axle load sensor
- Damaged wiring or connectors
- Corroded terminals or connections
- Faulty ECU software
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable, but monitor payload and avoid heavy loads until it's fixed.
Will this code come back after clearing?
If the underlying issue isn't fixed, yes, it will return.
Why does it pair with SPN 4545?
Both codes relate to axle load sensor issues, commonly triggered together.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
Start guided diagnostic →