In the Renault diagnostic system (RX-Link, Clip, etc.), DF049 typically refers to a fault in the Pre-heating Function or Glow Plug Control Circuit. While this is most commonly associated with diesel engines (such as the 1.5 dCi, 1.9 dCi, and 2.0 dCi), the code implies that the Engine Control Unit (ECU) has detected an anomaly in the command or execution of the glow plug system.
Below is a comprehensive breakdown of the code, its mechanics, causes, and resolution strategies. df049 renault
Unlike a simple sensor failure, DF049 has multiple potential sources. Here is a ranked list from most likely to least likely. In the Renault diagnostic system (RX-Link, Clip, etc
| Repair | DIY Cost | Garage Cost (UK/EU) | | :--- | :--- | :--- | | MAP sensor cleaning | £5 (cleaner) | £60 (if included in diagnostic) | | MAP sensor replacement | £30-60 | £120-180 | | Intake hose replacement | £50-150 (silicone kit) | £200-400 | | Turbo actuator repair | Not recommended | £300-600 | | ECU software update | Not possible | £80-150 | The Root Causes of DF049 in Renault Vehicles
Translation: Turbocharger Pressure Regulation - Consistency Fault.
In simple terms, the Engine Control Unit (ECU) has detected that the actual pressure coming from the turbocharger does not match the requested pressure. The ECU asked for a specific amount of boost, but the turbo either provided too much, too little, or provided it at the wrong time.
Common Renault Models Affected: