Powertrain
generic / SAE
P050E
Cold Start Engine Exhaust Temperature Too Low
During the cold-start strategy the ECU monitors exhaust temperature to ensure catalyst light-off. The measured EGT remains below the target threshold within the allowed time - heat-up strategy is not effective. Causes include excessive heat loss, very rich mixture cooling the exhaust, or a faulty EGT sensor.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number5 / 0E
Possible causes
- Excessive heat loss between port and catalyst high
- EGT sensor drifts low medium
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–800 €
- Estimated time: 1–3 h
- Component: exhaust gas temperature sensor
- Component: cold start strategy
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012