User:Jef: Difference between revisions
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==== Special Notes ==== | ==== Special Notes ==== | ||
* On some TDI CR engines, a faulty G42 / G31 sensor at the top of the intercooler | * On some TDI CR engines, a faulty G42 / G31 sensor at the top of the intercooler may report a much higher than possible temperature: | ||
** IDE04938 - Sensor for temp after charge air cooler: raw value | ** IDE04938 - Sensor for temp after charge air cooler: raw value | ||
Revision as of 15:51, 13 March 2025
P026A/000618 - Charge Air Cooler: Efficiency Below Threshold - MIL ON
Possible Symptoms
- Malfunction Indicator Lamp (MIL) active
- Reduced engine output
Possible Causes
- Intercooler restricted (internal or external)
- Faulty sensor
- ECM firmware issue
Special Notes
- On some TDI CR engines, a faulty G42 / G31 sensor at the top of the intercooler may report a much higher than possible temperature:
- IDE04938 - Sensor for temp after charge air cooler: raw value
- When found in a Touareg with the 3.0L TDI CNRB engine, there may be a firmware update for this: