AutoCodes - Cadillac - P0234 CADILLAC

P0234 CADILLAC Code - Engine Overboost

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3
Table of contents

|P0234 CADILLAC code possible causes

  • Faulty Turbocharger Wastegate Solenoid Valve
  • Faulty Turbo/Supercharger
  • Faulty Turbocharger Bypass Solenoid Valve

|How do I fix the P0234 CADILLAC code?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|Cost of diagnosing the P0234 CADILLAC code

Labor: 1.0

The cost of diagnosing the P0234 CADILLAC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0234 CADILLAC code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|P0234 CADILLAC code description

The boost pressure sensor is integrated with the turbocharger boost/intake air temperature sensor. The boost pressure sensor measures the range of pressures between the turbocharger and the throttle body. The sensor used on this engine is a three atmosphere sensor. Pressure in this portion of the induction system is affected by engine speed, throttle opening, turbocharger boost pressure, Intake Air Temperature (IAT), barometric pressure (BARO), and the efficiency of the charge air cooler.
The sensor provides a signal voltage to the Eengine Control Module (ECM), relative to the pressure changes. Under normal operation the greatest pressure that can exist in this portion of the induction system at ignition On, engine Off is equal to the BARO. When the engine is operated at wide-open throttle (WOT) the turbocharger can increase the pressure to near 240 kPa (34.8 psi). The pressure is equal to the BARO when the engine is idling or decelerating.
OBDII Code P0234 Cadillac - Engine Overboost -

|Need more information with the P0234 CADILLAC code?

Need more information on how to fix the P0234 CADILLAC code? Get Access to Factory Service Manuals

|Need help with a P0234 CADILLAC code?

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|P0234 CADILLAC code comments

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