Hours: 07–23 daily

TuningBot DTC Database · v4.37.15

P0390 Diagnostic Trouble Code (2 variants)

Generic (OBD-II) interpretation + 1 manufacturer-specific in the TuningBot DTC database.

P · PowertrainEngineOBD2
Brand pages:Ford

Generic (OBD-II) interpretation

P0390
Camshaft Position Sensor B Circuit (Bank 2) Generic · engine Data confidence 90%

The control module detected a fault associated with the Camshaft Position Sensor B Circuit (Bank 2) circuit or function; the stored code identifies the affected component rather than a single failure mode.

Possible causes

  • Wiring
  • poor connection
  • CMP sensor
  • ECM

Manufacturer-specific interpretations

Ford

2 interpretations
P0390:01
Exhaust Cam Position Circuit, Bank 2 Ford · engine Data confidence 94%

Ford documents P0390:01 for its 2024-2025 gasoline-engine OBD monitor strategy as exhaust cam position circuit, bank 2. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Inspect relevant wiring and connectors
  • Check power supplies and grounds
  • Compare commanded and measured values
  • Check applicable OEM service information
Applies to Ford gasoline-engine OBD applications|2024-2025 model years
P0390:02
Exhaust Cam Position Circuit Intermittent Bank 2 Ford · engine Data confidence 94%

Ford documents P0390:02 for its 2024-2025 gasoline-engine OBD monitor strategy as exhaust cam position circuit intermittent bank 2. This three-byte interpretation is application-specific and identifies the detected monitor condition rather than a confirmed failed component.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Inspect relevant wiring and connectors
  • Check power supplies and grounds
  • Compare commanded and measured values
  • Check applicable OEM service information
Applies to Ford gasoline-engine OBD applications|2024-2025 model years

Related and nearby codes

How to read P0390

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

390

Specific fault index within the subsystem.

Frequently asked questions about P0390

What does P0390 mean?

Diagnostic Trouble Code (2 variants). The control module detected a fault associated with the Camshaft Position Sensor B Circuit (Bank 2) circuit or function; the stored code identifies the affected component rather than a single failure mode.

Is P0390 generic or manufacturer-specific?

P0390 exists both as a generic OBD-II code (same meaning on every make) and with 1 manufacturer-specific interpretation(s): Ford. Always read it in the context of your vehicle.

Can TuningBot remove P0390 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

ECU tuningStage 1 dyno results for Ford engines See the results →

← Search the full DTC database