What do P0340 and P0344 together mean?

Not by themselves. For the Ford applications covered by the cited Ford OBD monitor summary, P0340 is listed as an intake cam-position circuit fault, Bank 1, and P0344 as an intermittent fault in that circuit. The summary describes monitoring for an intermittent camshaft-position signal in an unexpected location [S1]. That makes the pair a useful clue about a recorded circuit or signal concern, not confirmation that a particular part has failed.

Those definitions are Ford-specific, not universal. The exact vehicle and engine matter, and the codes need to be interpreted using applicable service information. A code pair alone does not establish the cause or the needed repair.

Record the vehicle’s year, make, model, and engine, if known. Also note whether each code is current, pending, or stored, and save the scan tool’s freeze-frame information for each code if available. The Ford summary specifically advises confirming the engine, code status, and freeze-frame conditions before consulting applicable service information [S1].

Include when you first noticed a warning light and any changes you observed in how the vehicle ran, using your own words. Don’t guess at a cause. For example, write “warning light appeared after a short trip” rather than concluding that a specific component is defective. If the engine’s identity or code status is uncertain, mark it as unknown rather than filling in a guess.

Give the technician the exact code readout and vehicle details, then ask them to confirm what these codes mean for that particular engine using the applicable service information. Ask whether both codes are current or whether one is only stored or pending, and whether the freeze-frame conditions help explain when the fault was recorded.

You can also ask: “What evidence supports the diagnosis, and what would rule out the other likely explanations?” The cited Ford summary describes how its monitor identifies an intermittent signal condition; it does not establish which component, connection, or other vehicle-specific cause is responsible, or prescribe a repair for your vehicle [S1]. Leave testing and diagnosis to a qualified technician rather than treating the code names as a parts-replacement instruction.

Use this copyable template and replace the brackets with what you know:

“Vehicle: [year, make, model, engine or unknown]. Codes: P0340 [current/pending/stored/unknown] and P0344 [current/pending/stored/unknown]. Freeze-frame details: [attach or summarize / not available]. What I noticed: [brief observations and when they occurred]. Please confirm the code definitions for this exact vehicle, review the applicable service information, and explain what evidence supports the diagnosis before recommending a repair.”

If the two codes were recorded under different conditions, include each code’s separate freeze-frame information if available. If you have only a code-reader display and no freeze-frame data, say so; missing information should not be mistaken for a confirmed diagnosis.