Boost Control Position Failure
The boost control system is not functioning as expected.
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 engine control module (ECM) is not getting the right boost levels from the turbocharger or supercharger, which can lead to poor performance.
What the computer is actually seeing
The ECM monitors the boost pressure against expected values; if the boost pressure is out of range, it triggers this code.
What a healthy reading looks like
Typical boost pressure for a turbocharged system is around 10-15 psi (psi gauge).
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 for visible vacuum leaks or damaged hoses in the boost control system. If found, repair or replace the affected parts. Decision: If leaks are repaired, clear the code and test drive. If code returns, proceed to step 2.
- 22. Inspect the turbocharger or supercharger for damage or signs of wear. Watch for excessive play in the shaft. Decision: If damage is found, replace the affected component. If not, proceed to step 3.
- 33. Measure the boost pressure with a gauge under full acceleration. Verify the boost pressure matches expected values. Decision: If pressure is within range, check wiring and connectors to the boost pressure sensor. If pressure is low, replace the turbocharger or supercharger.
Common causes
- Faulty turbocharger/supercharger
- Worn out boost pressure sensors
- Issues with the wastegate actuator
- Vacuum leaks or damaged hoses
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's moderate severity; drivability may be affected. Drive with caution and fix soon.
Will this code come back after I clear it?
If the underlying issue isn't fixed, yes, it will likely return.
Why does this code pair with other boost-related codes?
They all relate to the boost control system, so issues often overlap.
Working a real vehicle right now?
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