FMI 2 - Incorrect Engine Timing
The engine controller has detected a timing issue with the engine.
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)
Your engine timing is off, which means the engine's internal components aren't working together as they should, affecting performance and efficiency.
What the computer is actually seeing
The Engine Control Module (ECM) monitors the timing signals from the crankshaft and camshaft sensors. If the signals are not aligning within a certain window, it triggers SPN 530.
What a healthy reading looks like
Crankshaft position signals should be in sync with the camshaft position signals, usually within 2-5 degrees.
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 crankshaft and camshaft sensors. Look for frays or corrosion. If damaged, repair or replace.
- 22. Check the engine oil level and condition. Low oil can affect timing chain performance. Top off if low, change if dirty.
- 33. Use a scan tool to view the timing data from the crankshaft and camshaft sensors. Confirm they are within expected parameters (2-5 degrees). If not, go to step 4.
- 44. Test the crankshaft and camshaft sensors for proper function using a multimeter. Compare readings against manufacturer specifications. If readings are off, replace the defective sensor.
- 55. Inspect the timing belt/chain for wear or improper installation. If it appears worn or misaligned, replace it as necessary.
Common causes
- Faulty crankshaft sensor
- Faulty camshaft sensor
- Timing chain/belt wear
- Incorrectly installed timing components
- ECM software issues
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Moderate severity indicates a performance issue. It might be drivable, but you should fix it soon to avoid further damage.
Will this code come back after clearing?
If the underlying issue isn't resolved, yes, it will likely return after a short period of driving.
Why does this code sometimes pair with other codes?
Timing issues often affect other systems, leading to multiple fault codes related to timing or performance.
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