Fiat 500 P0327: Knock Sensor → Low input

  P0327 is a powertrain related OBD-II trouble code. It has the same meaning for the Fiat 500 as it would any other vehicle. By definition, P0327 means that the vehicles ECM/PCM is getting a signal that is lower than the defined operational range. Clearing this code typically requires a new knock sensor or correcting … Read more

Fiat 500: Door Ajar Warning Stays On

  Your Fiat 500’s door ajar message can help you get a door all the way closed when you otherwise wouldn’t notice when it was open.  Over the life of the vehicle, it is possible for the door ajar warning to stay on even when the doors are, in fact, not ajar.   The door … Read more

Fiat 500 Transmission Overheating: Causes and Diagnosis

Transmissions are an integral part of any vehicle, and overheating can lead to costly repairs or even permanent damage. Fiat 500 owners should be aware of the common symptoms and causes of transmission overheating to prevent potential issues and ensure their trucks remain strong and reliable. In this article, we will discuss the common causes … Read more

Fiat 500: SRS On Diagnosis

  When you start your Fiat 500, the OBD-II system runs a self diagnostic check on all major systems.  If any of these checks fail, you will see a diagnostic warning light on the dash for the corresponding system.  When the SRS system fails this check, you’ll see the SRS light.  SRS stands for supplemental … Read more

Fiat 500 Radiator Leak: Symptoms, Causes, Fix

A leaking radiator in a Fiat 500 can cause the engine to overheat, resulting in costly damage to the head gasket or a cracked head if not addressed promptly. It is important to recognize the signs of a radiator leak and take action quickly to avoid long-term engine damage. Identifying the symptoms of a radiator … Read more

Fiat 500 Leaking Heater Core Diagnosis

One of the most common problems that can happen to a vehicle is a heater core leak.  If your Fiat 500 has a leaking heater core, it is not a breakdown risk.  Although, it is necessary to make sure that the lost coolant is replaced.  It can cause damage to the vehicle in other ways, … Read more

Fiat 500 Bad Starter → Symptoms & Diagnosis

  One of the most common problems that can occur in the life of a vehicle is a bad starter, that includes the Fiat 500.  It is important to determine whether or not it’s a bad starter that is keeping the vehicle from turning over. If your 500 is not starting, don’t assume right away … Read more

Fiat 500: P0720 → OSS Circuit → Malfunction

P0720 is a generic OBD II trouble code, which means that it has the same meaning for your Fiat 500 as it would any other vehicle.  It indicates that your 500’s OSS (Output Shaft Speed Sensor) is reporting a malfunction. It’s typically caused by a bad OSS, or a wiring problem. The OSS works by … Read more

Fiat 500 P0520: Oil Pressure Switch/Sensor → Circuit

  P0520 is a common OBD2 trouble code.  It’s generic, which means that it has the same meaning for the Fiat 500 as it would any other vehicle.  P0520 indicates that the oil pressure sensor is operating outside of its normal “range”.  It is typically caused by a bad oil pressure sensor switch or a … Read more

Fiat 500 P0108:  MAP Barometric Sensor → High Input 

  P0108 is a generic OBD-II trouble code.  It indicates your Fiat 500’s MAP (manifold absolute pressure) sensor’s voltage reading is outside of the normal operating range.  The voltage is too high.  It’s most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. The MAP sensor measures the air pressure coming into … Read more