User:Jef: Difference between revisions
From Ross-Tech Wiki
Table Of Contents
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* On some TDI CR engines, a faulty G42 / G31 sensor at the top of the intercooler may report a much higher than possible temperature: | * 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 | ||
** [https://forums.ross-tech.com/index.php?threads/32948/ - Case Study - P026A/000618 - Charge Air Cooler: Efficiency Below Threshold - MIL ON] | |||
* When found in a Touareg with the 3.0L TDI CNRB engine, there may be a firmware update for this: | * When found in a Touareg with the 3.0L TDI CNRB engine, there may be a firmware update for this: | ||
Revision as of 15:58, 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
- - Case Study - P026A/000618 - Charge Air Cooler: Efficiency Below Threshold - MIL ON
- When found in a Touareg with the 3.0L TDI CNRB engine, there may be a firmware update for this: