Powertrain, generic · Vehicle speed, idle control and auxiliary inputs
P053F Cold Start Fuel Pressure Performance Bank 1
Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo
Petrol direct-injection engines often inject twice after a cold start, once late in the compression stroke, to heat the catalyst; this needs rail pressure within a window. P053F reports that the window was not reached often enough. Documented only by Ford's EcoBoost: over the whole cold-start phase it compares the time in the window with the phase duration against 0.70, once per cold start, with fuel level at least 15 % and the fuel sensors sound. The module then drops this mode, the catalyst lights off later; warning lamp after two trips. GM does not use P053F.
Likely causes
High-pressure pump weak or volume control valve sluggish
Low supply pressure (lift pump, filter)
Rail pressure sensor drifting
Pump follower or cam lobe worn
Software or calibration
Symptoms
- Check engine light on
- Usually no noticeable driving symptoms
- Possibly longer cranking or rough cold idle
Repair estimate
DifficultyHardWorkshop job
Parts and labour€100–1,200
Time0.5–4 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
high pressure fuel pumpfuel volume control valvefuel rail pressure sensorengine control module
Related codes
References: newtonnet.co.uk, fordservicecontent.com, law.cornell.edu.