What do P0122 and P0222 together mean?
Quick answer
P0122 and P0222 together are a reason to investigate both throttle-position signal circuits, not proof that a particular sensor or throttle body has failed. In a 2018 Ford system documented for analog electronic throttle bodies, the codes refer to continuity faults in TP A and TP B, whose signals serve a redundant role. That definition is not universal; confirm the vehicle-specific meanings and have a qualified technician use the applicable service information.
The question, the details, the next step.
What do P0122 and P0222 together mean? Should I assume the throttle-position sensor is bad?
No. Treat the pair as a diagnostic clue, not a parts verdict. In the 2018 Ford documentation for its covered analog electronic throttle-body system, P0122 and P0222 identify continuity faults in TP A and TP B. That system uses two throttle-position circuits with opposite signal slopes for redundancy. The source describes that particular system; it does not establish the definitions, wiring layout, or cause for every vehicle. [S1]
The useful starting point is that both records may point a technician toward the throttle-position signal circuits, but they do not prove that the sensor itself is defective. The actual cause and next checks depend on the vehicle and its service information.
What details should I collect before I book a diagnostic check?
Write down the year, make, model, and engine, if known. Record the status shown for each code and whether either returned after it was cleared during diagnosis. Avoid clearing codes just to see what happens if that could remove useful context.
If a scan tool report is available, save the freeze-frame information and the conditions when the warning appeared. Note any symptoms in plain language, but do not try to reproduce a potentially unsafe symptom. These details can help a technician match the code definitions and diagnostic procedure to the right vehicle.
What should I ask the technician to check, without telling them which part to replace?
Ask them to confirm the manufacturer-specific definitions for both codes and review the applicable service information for your exact vehicle. Then ask how they will determine whether both faults share a cause or are separate findings, and what test results would support a component replacement.
For example, you could say: “I have P0122 and P0222 on a [year] [make] [model] with a [engine, if known]. They are [status shown on the report]. The freeze-frame details are [available/not available]. Please confirm the vehicle-specific definitions and explain what evidence identifies the cause before recommending a part.”
That wording gives useful context without assuming a failed sensor, connector, wire, or control module. Leave electrical testing and vehicle-specific procedures to a qualified technician using the correct service information.
How should I understand the result if the technician finds a problem in only one circuit?
Ask for the finding and the evidence behind it: which circuit or condition was tested, what result did not meet the vehicle’s service procedure, and how does that explain each code? A paired code list does not by itself show whether one shared issue caused both records or whether there are two separate issues.
The Ford source establishes a two-circuit redundant arrangement only for the system it covers; it does not establish a universal circuit relationship or tell you what a particular test result means on another vehicle. [S1] If the explanation is unclear, ask what information would distinguish the likely cause from alternatives before authorizing a repair. This guide cannot identify the fault remotely.
A practical checklist
Record year, make, model, and engine if known.
Note the status shown for each code.
Save available freeze-frame information and describe when symptoms occur.
Ask the technician to confirm code meanings using vehicle-specific service information.
Ask what test evidence supports any recommended part replacement.
A few more useful answers
Do these two codes prove the throttle body needs replacement?
No. The code pair is a clue for diagnosis, not proof of a failed throttle body or sensor. Ask what vehicle-specific test result supports the proposed repair.
Does the cited Ford definition apply to every vehicle?
No. It describes a covered 2018 Ford analog electronic throttle-body system. The source does not establish code definitions or wiring details for other vehicles. [S1]
What if I do not have freeze-frame information?
Tell the technician it is unavailable and provide the code status and any symptoms you observed. Missing freeze-frame information does not establish a cause.
Sources
References used for this guide.
- [S1] 2018 Ford OBD System Operation Summary: Analog Throttle Position fordservicecontent.com · Checked