P0340 means the Rogue ECM lost or rejected the expected Bank 1 cam-position signal; it does not prove the sensor failed. Identify the QR25DE, PR25DD, KR15DDT or hybrid circuit, inspect connector and harness routing, load-test power, ground and signal, then scope cam against crank. Missing/noisy edges favor a circuit or sensor path; clean signals with stable phase error plus P0011 or rattle favor oil-control or mechanical timing inspection.
Match the symptom
Select the closest observation. The result changes the first test; it does not name a part to replace.
Check RPM and cam sync.
What can set P0340—and how to separate it
The order below is evidence-driven, not a universal probability ranking. Vehicle year, repair history, companion codes and the operating condition in freeze frame change where diagnosis should begin.
| Possible cause | Evidence that supports it | First useful test |
|---|---|---|
| Cam sensor failure | Power/ground good; waveform absent | Signal test |
| Connector/reference/ground fault | Loaded circuit fails | Voltage-drop test |
| Harness chafe | Multiple codes/contact damage | Routing inspection |
| Cam/crank correlation fault | P0016/sync error/noise | Correlation/timing |
| Reluctor or PCM issue | Circuit passes; waveform abnormal | Scope/reluctor inspection |
Identify the engine before identifying the sensor
Use VIN and the correct ESM connector view. A location or pinout for an S35 QR25DE should not be used on a T33 direct-injection or turbo engine.
Inspect harness areas disturbed by valve-cover, high-pressure fuel or timing work. Look for backed-out terminals, oil contamination and wires pulled tight around brackets.
Test the circuit under operating load
Verify power and ground with appropriate load and capture the signal during crank and idle. Static resistance can appear normal through a connection that fails with heat or engine vibration.
Multiple sensor codes may share a supply or ground. Isolate the common branch before replacing several components that are all receiving the same bad voltage.
Waveform evidence separates sensor from timing
Missing edges, noise or amplitude collapse support sensor, connector, air-gap or harness faults. Recreate the temperature recorded when possible.
A clean but consistently displaced cam pattern relative to crank supports phaser, chain or reluctor investigation. That measured offset—not P0340 wording alone—justifies mechanical work.
Save these scan-data clues
Freeze frame is a snapshot of conditions when the PCM matured the fault. It can distinguish an idle-only problem from a load, cold-start or monitor-completion problem. Clearing first throws that context away.
- Exact VIN, platform, model year and engine sales code
- All confirmed, pending and permanent companion codes
- RPM, load, coolant temperature and vehicle speed
- Relevant commanded and actual scan data
- Recent service, repairs and symptom conditions
- Manufacturer bulletin and current software/VIN status
A practical diagnostic workflow
- 01Identify sensor and engine
Cam layouts differ.
- 02Read all codes
Shared faults change priority.
- 03Inspect harness routing
Look for heat/chafe/contact.
- 04Load-test circuits
Continuity alone can mislead.
- 05Scope cam and crank
Separate dropout from phase shift.
- 06Verify hot and cold
Confirm sync and no pending code.
Do not replace the most commonly named component from P0340 alone. Confirm the exact engine, preserve evidence and complete the manufacturer test sequence before ordering parts.
Why the model year changes the test
Rogue diagnostics span S35, T32 and T33 generations with QR25DE, PR25DD, KR15DDT, hybrid and market-specific powertrains, while Rogue Sport is a separate model. EVAP routing, MAF strategy, catalyst layout, valve timing and CVT hardware are not interchangeable. Confirm VIN, production model, engine, drivetrain, CVT code and calibration before applying a test or bulletin.
- S35, T32 and T33 engine and connector layouts differ.
- Rogue Sport is a separate platform with separate service data.
- P0011/P0016 companion codes change diagnostic priority.
- Repeated stalling, long crank or no-start warrants prompt diagnosis.
P0340 FAQ
Is P0340 always the sensor?+
No.
Can I drive?+
Limit driving due to stall/no-start risk.
Can P0016 relate?+
Yes.
Why check other codes?+
They can reveal a shared circuit.
Can heat matter?+
Yes.
Why scope the signal?+
It separates circuit loss from timing shift.
Can a reluctor cause it?+
Yes.
What confirms repair?+
Stable cam/crank sync and no pending P0340.
Ford diagnostic references
These documents explain Ford monitor operation. Exact pinpoint tests, connector views and specifications must be selected for the truck's VIN and model year in current service information.
01Mopar vehicle informationOfficial owner manuals and model-year engine, oil, warning and operating information↗02Stellantis/Mopar service informationFactory VIN-, platform-, engine-sales-code and calibration-specific service information↗