P1233

Warning

Wastegate Failed Open (Under Pressure)

Severity
Warning
Category
Powertrain
Code Type
Manufacturer Specific
Applicable Regions
US, EU, Global

Is it safe to drive?

🟡 Check the vehicle display for drive or charge restrictions and schedule service promptly.

What does P1233 mean?

P-code P1233 means "Wastegate Failed Open (Under Pressure)". It is a manufacturer-specific diagnostic trouble code (DTC) in the powertrain. The pressure reading from the wastegate failed open (under pressure) is outside the expected operating range. This warning should be addressed within the next few days to avoid further damage. This code applies to OBD-II compliant electric and hybrid vehicles.

Possible Causes

  • Faulty pressure sensor or damaged sensor connector
  • Fluid leak causing lower-than-expected pressure readings
  • Blocked pressure port or contaminated sensing element
  • Pump or actuator failure affecting system pressure

Recommended Actions

  1. 1 Avoid aggressive driving and schedule a diagnostic appointment within the next 1–3 days
  2. 2 Scan for all DTCs with an OBD-II scanner — note any related codes stored alongside P1233
  3. 3 Inspect the powertrain component and its wiring for visible damage
  4. 4 Check for water intrusion in connector areas and clean contacts if corroded
  5. 5 Clear the DTC, road-test the vehicle, and re-scan to confirm whether the fault returns
  6. 6 If the fault persists after inspection and clearing, consult an EV-certified technician for component replacement

Related Powertrain fault codes

P0100 Mass or Volume Air Flow Circuit Malfunction P0102 Mass or Volume Air Flow Circuit Low Input P0103 Mass or Volume Air Flow Circuit High Input P0105 Manifold Absolute Pressure/Barometric Pressure Circuit P0107 Manifold Absolute Pressure/Barometric Pressure Circuit P0108 Manifold Absolute Pressure/Barometric Pressure Circuit P0110 IAT Circuit Malfunction P0117 Engine Coolant Temperature Circuit Low Input