Ignition Switch Run Position Circuit High
The P2533 code means the vehicle's onboard diagnostic system has detected: Ignition Switch Run Position Circuit High. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $600 (parts and labor)
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Common Symptoms
- Engine continues running after key is removed
- Ignition remains powered in off position
- Battery drain when vehicle is parked
- Check engine light on
Probable Causes (Ranked by Likelihood)
- Short to voltage in run circuit wiring Very High
- Ignition switch stuck in run position internally High
- Aftermarket remote start system wiring issue Moderate
- Body control module keeping run circuit energized Low
Step-by-Step Diagnostic Procedure
-
Check run circuit voltage with key in all positions
-
Inspect ignition switch for stuck contacts
-
Verify aftermarket accessories are not feeding voltage to run circuit
-
Test body control module logic for ignition state
Frequently Asked Questions
Why does my engine stay running after I remove the key?
P2533 means the run signal stays high even with the key removed. A shorted wire or stuck switch contact keeps the ECM thinking the ignition is on.
Can an aftermarket remote start cause P2533?
Yes. Improperly installed remote start systems can feed voltage back into the ignition run circuit, keeping it energized.
Will P2533 drain my battery?
If the run circuit stays energized, multiple systems will remain powered, draining the battery. Disconnect the battery when parked until repaired.
Sources
This page is built from documented references. Verify against your own service info before repair work.
P2533 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
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