P0045

Turbocharger/Supercharger Boost Control "A" Circuit/Open

DTC P0045, sometimes indicated as P004500 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the air/fuel mixture causing turbocharger/supercharger boost control "a" circuit/open.

The P0045 code means that there is an open or short in the boost control "A" circuit. This can be caused by a number of things, including a bad boost control solenoid, a wiring issue, or a faulty sensor.
If you have a P0045 code, you'll need to troubleshoot the circuit to find the cause of the problem. This can be a difficult task, so it's best to enlist the help of a qualified technician.

  • P0045: Turbocharger/Supercharger Boost Control A Circuit/Open
  • P0045: Turbocharger/Supercharger Boost Control "A" Circuit/Open
  • P0045: Turbo/Super Charger Boost Control Solenoid A Circuit Open
  • P0045: Turbocharger (TC) boost control solenoid/supercharger (SC) boost control solenoid – open circuit
  • P0045 00: Turbocharger (TC) boost control solenoid/supercharger (SC) boost control solenoid - open circuit

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • TB011312 - ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
    VOLKSWAGEN: Update programming, mil on, faults P0299, P0403, P20EE, P229F, P2100, P0045, P2008, P24AF, P026A, and/or P050E stored in ecm fault memory
  • SSM 51150 - ENGINE AND ENGINE COOLING
    FORD: Some 2020-2022 f-super duty vehicles equipped with a 6.7l engine may exhibit an illuminated malfunction indicator lamp (mil), lack of power, and/or excessive turbo noise during operation, with diagnostic trouble codes (dtc) P003A, P0045, p0
  • SSM 50564 - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
    FORD: Some 2020-2022 f-super duty vehicles equipped with a 6.7l engine may exhibit an illuminated malfunction indicator lamp (mil), lack of power, and/or excessive turbo noise during operation, with diagnostic trouble codes (dtc) P003A, P0045, p0
  • SB-14-002 - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
    HINO: The following is to inform you of the revision of the troubleshooting procedure for the dtc P0045 & P259E. Please attach service data to the relevant pages of the workshop manuals for maintenance and servicing.
  • 11-183-18R - ELECTRICAL SYSTEM
    SUBARU: This bulletin announces reprogramming file availability to optimize the ecm. These new files involve the ecm?S diagnosis of dtc P0045:
  • 11-183-18R - ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
    SUBARU: This bulletin announces reprogramming file availability to optimize the ecm. These new files involve the ecm?S diagnosis of dtc P0045: turbocharger / supercharger boost control ?A? Circuit open and dtc P2196: a/f o2 sensor signal biased / s
  • 167-B1412-12 - EQUIPMENT:ELECTRICAL
    HINO: 14-002 the following is to inform you of the revision of the troubleshooting procedure for the dtc P0045 & P259E. Please attach service data to the relevant pages of the workshop manuals for maintenance and servicing.
  • 167-B1412-12 - EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
    HINO: 14-002 the following is to inform you of the revision of the troubleshooting procedure for the dtc P0045 & P259E. Please attach service data to the relevant pages of the workshop manuals for maintenance and servicing.
  • SB08-J-001A - ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
    CHEVROLET: Isuzu: turbocharger boost control solenoid circuit dtc P0045 false code detection. *kb
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