DTC P0234: Turbocharger/Supercharger A OVERBOOST Condition
WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2010 Mercury Mountaineer, 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, and 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0234: TURBOCHARGER/SUPERCHARGER A OVERBOOST CONDITION
| Description: | The powertrain control module (PCM) continuously monitors the turbocharger system for an overboost condition. The PCM checks for a maximum throttle intake pressure (TIP) parameter identification (PID) reading during engine operation, which indicates an overboost condition. The DTC sets when the PCM detects that the actual throttle intake pressure is greater than the desired throttle intake pressure by 27.6 kPa (4 psi) or more for 5 seconds. | ||
| Possible Causes: |
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| Diagnostic Aids: | Check tubing for obstructions, cracks and poor fitting connections. Check the TC wastegate regulating solenoid valve for proper operation. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HN . | ||