1FTBR1C84MK A77821
Crew
Ford Transit 350·2020·Crew Van·VIN 1FTBR1C84MK A77821
Transit #4
DrivingEastside route · in progressDriver
JP
Jin Park
Odometer
142,803 mi
Last service
Feb 2 · 93d ago
Next service
in 24 days · $480 est
Active DTCs
P0420P0171
Last ping 2 min ago · I-880 N near Industrial Way
Diagnostic trouble codes 6 lifetime · 2 active
- P0420CriticalOpenCatalyst System Efficiency Below Threshold (Bank 1)First seen May 4 · 18:14 · Last seen today · 12 min ago · Detected on 3 tripsCatalyst converter efficiency has dropped below the OEM-defined threshold for this bank. Likely cause: aging catalyst, post-cat O2 sensor drift, or upstream misfire fouling.
- P0301WarnOpen · intermittentCylinder 1 Misfire DetectedFirst seen Apr 27 · 09:11 · Last seen May 4 · 18:21 · Detected on 4 tripsRandom misfires logged on cylinder 1. Likely related to upstream catalyst issue. Recommend coil/injector inspection during catalyst service.
- P0171ClearedSystem Too Lean (Bank 1)First seen Feb 11 · Cleared Mar 30 · serviceResolved with MAF sensor replacement at Northgate Diesel.
- P0128ClearedCoolant Temperature Below Regulating TemperatureFirst seen Dec 4, '25 · Cleared Dec 9, '25Self-resolved.
- P0299ClearedTurbocharger UnderboostFirst seen Aug 22, '25 · Cleared Sep 4, '25Self-resolved after warm-up cycles.
Code distribution · last 12 months
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Most-frequent codes
- P04203 occurrences
- P01712
- P03012