Powertrain, generic (extended)

P200F Catalyst System Over Temperature (Bank 2)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P200F flags excessive temperature in the catalyst of bank 2, so it needs an engine whose second bank feeds its own catalyst with its own temperature sensor. No manufacturer documents P200F publicly; GM and Ford describe only the bank 1 code P200E for their single-path diesels, with limits around 800 to 850 °C behind the oxidation catalyst or a link to a stationary regeneration that runs hot. A twin-path system would apply such a limit per side. Overheating confined to one bank usually has a cause on that bank: an injector dribbling fuel, misfire on those cylinders, or a sensor reading too high. Comparing both banks helps: if only bank 2 is hot, look at its cylinders and sensor first. CARB treats such temperature records as protection, not as proof that the catalyst still converts, so efficiency is monitored separately.

Likely causes

Fuel slipping into the bank 2 exhaust (dribbling injector, misfire)
Bank 2 exhaust temperature sensor reading too high
Regeneration overheating on bank 2

Symptoms

  • Malfunction indicator lamp on
  • Possible power reduction

Repair estimate

DifficultyHardWorkshop job
Parts and labour€100–3,000
Time1–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

catalytic converterexhaust temperature sensor

Related codes

P200EP200DP2429P2082

References: law.cornell.edu, gsi.ext.gm.com, fordservicecontent.com.