P0236 on Ford Focus
Turbocharger/Supercharger Boost Sensor A Circuit Range/Performance
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Ford Focus context without treating complaints as confirmed diagnoses.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P0236.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What P0236 Means on Your Ford Focus
P0236 is a diagnostic trouble code indicating: Turbocharger/Supercharger Boost Sensor A Circuit Range/Performance. This code relates to the fuel injection system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Ford Focus Owner Reports
Source: NHTSA Complaints Database
"P0236 , p0238, p007d, p0456, charged air sensor A fault, boost sensor range/performance fault, and other faults , crank car engine service now pops up everytime, clear codes pops rite back up, car stumbles ,misfires , no boost, no throttle shuts off . Only had this car a week ."
"Just filled my gas tank up then as i left the gas station got about 1 mile up the road then while sitting at a stoplight i turned the ac on and idle dipped, car felt like it was going to die(which it did) then as i tried to re-start, cel came on and car would not start."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Ford Focus
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
-
1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
-
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
-
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.