P024D
Charge Air Cooler Bypass Position Sensor A Circuit Range/Performance
Charge-air cooling (boost)
Generic OBD-II
Low
What it means
P024D means the position sensor that reports where the charge-air-cooler (intercooler) bypass valve sits is giving a reading the ECM considers out of range or inconsistent with the commanded position. It usually points to the sensor, its wiring, or a valve that is binding. The engine typically still runs normally while charge-air cooling may not be controlled precisely.
Low
Can I keep driving? Usually drivable — this is a position-feedback fault on the intercooler bypass, with little day-to-day effect, though charge-air control may be off.
Common symptoms
What you'll notice
- Check-engine light on
- Often no noticeable driving symptoms
- Possible minor loss of power or throttle response under boost
Common causes
Most likely first
- Charge-air-cooler bypass position sensor reading out of range or implausibleLikely
- Damaged, corroded, or loose wiring/connector at the position sensorCommon
- Bypass valve binding or sticking so actual position disagrees with commandedCommon
- Faulty engine control module (ECM) — least commonLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare the bypass position reading to the commanded position with a scan tool.
- Inspect the position sensor connector and wiring for damage or corrosion.
- Check the bypass valve for binding or mechanical restriction through its range.
- Test or replace the position sensor if out of range; have the ECM checked if all else is good. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P024D?+
Generally yes — it rarely affects normal driving. The intercooler bypass may not be positioned correctly, so fix it to keep charge-air cooling working as designed.
Can I just clear P024D?+
It clears, but a range/performance fault returns once the position feedback is judged implausible again.
Related codes
Often seen with P024D
Read & clear P024D yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX