Code Definition

P1220 — Series Throttle Control System Malfunction

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Ford

About P1220

P1220 is a manufacturer-specific powertrain diagnostic trouble code recorded for Ford vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1220 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

On Ford applications with a series throttle control system, a second electronically controlled throttle plate works in series with the primary throttle to allow the PCM to fine tune airflow for idle, traction, and emission control. The system relies on throttle position sensors and a throttle actuator motor that the PCM monitors and drives. DTC P1220 is set when the PCM detects a malfunction in the series throttle control system, meaning the actual throttle behaviour does not agree with the commanded position or a circuit fault is present. This can be caused by throttle position sensor faults,...

Join TaT to view the complete code information and diagnostic details.

Quick Facts