Peugeot 407 U0921 Engine Trouble Code

Theoretically you can drive for a few weeks or even months with a broken MAF sensor. You will notice a decrease in gas mileage and over time the car will eventually start stalling a lot. At a shop, the replacement cost is between $200-$300 depending on the car, but that's usually the cost of parts because the labor is relatively simple.

Peugeot 407 U0921 Code Meaning :

When you check Peugeot 407 car engine light came on code U0921 the reason should be . However manufacturer may have a different definition for the U0921 OBD-II Diagnostic Network (U) Trouble Code. So you should chech it on our car models.

U0921 Fault Symptoms :

Peugeot 407 U0921 Possible Solution :

The crankshaft sensor signals the fuel injection computer or the ignition control when the cylinders are firing. This causes the ignition coil to provide a spark and the injector to inject fuel into each cylinder at the right time.If either sensor isn't working correctly, the car will run rough and the engine will be less efficient. In later car models, the car's computer can usually keep the vehicle running, but the engine warning light on the dashboard goes on to warn the driver.

Parts or components should not be replaced with reference to only a U0921 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.