P0022 is a relatively common general OBD2 trouble code. If your Mirai has Variable Valve Timing (We’ll be referring to it as VVT a lot), it can get this code. What is VVT? VVT changes the frequency and distribution of gases entering and exiting the combustion chamber. It allows the engine to act like it … Read more
P0050 is a common OBD2 trouble code. It’s generic, which means it has the same definition for the Toyota Mirai as any other vehicle. The cause of P0050 is almost always a bad heated oxygen sensor or wiring issue. P0050 Definition: Heater Control – Circuit – Bank 2 Sensor 1 P0050 indicates no signal coming … Read more
P0030 is a very common OBD2 trouble code. It’s generic, which means it has the same definition for the Toyota Mirai as any other vehicle. This code is almost always caused by a bad heated oxygen sensor or wiring issue. P0030 Definition: Heater Control – Circuit – B1S1 P0030 indicates no signal coming from your … Read more
P1135 is a manufacturer-specific trouble code, which means that different automakers can assign it whatever definition they see fit. In the case of the Toyota Mirai, it indicates that the heated Oxygen sensor at bank 1 sensor 1 has a heater element that is not responding. The most common fix for P1135 is a new … Read more
P0730 is a standard OBD2 trouble code. It indicates that your Toyota Mirai’s PCM has detected an incorrect gear ratio. While this code can appear if you changed your Mirai’s transmission or rear end gearing without re-flashing the computer, it almost always has nothing to do with an incorrect gear ratio. An internal transmission problem … Read more
P0871 is a somewhat rare diagnostic trouble code. While your Toyota Mirai’s check engine light will come on, this particular code indicates that there’s something wrong with the transmission, specifically the transmission fluid pressure sensor switch “C”. It’s a generic code, so P0871 has the same definition for any vehicle made for the 1996 model … Read more
P0480 is a relatively common OBDII trouble code. It indicates that your Toyota Mirai’s “cooling fan 1 control circuit” is malfunctioning. It’s a generic code, so it has the same meaning for any vehicle made for the 1996 model year and up. P0480 Definition: Cooling Fan 1 – Control Circuit Malfunction Here is the … Read more
P0320 is a relatively common ignition-related trouble code. P0320 indicates that your Toyota Mirai’s ignition/distributor engine speed circuit is malfunctioning. P0320 is most likely caused by the engine speed sensor, or a wiring issue. P0320 Definition: Ignition/Distributor Engine Speed – Input Circuit Nearly all modern vehicles, including the Toyota Mirai, use individual coil packs which … Read more
P0717 is a somewhat rare OBD2 trouble code that can occur in the Toyota Mirai. While it illuminates the check engine light, the code warns of a transmission-related error, specifically that the input shaft/turbine speed sensor is not sending a signal. P0717 is a generic code (it has the same meaning for any vehicle made … Read more
P0601 is a somewhat rare OBD2 trouble code. It’s a generic code (it has the same meaning for the Toyota Mirai as it would any other vehicle). While it indicates that the PCM’s memory failed a memory check, P0601 is commonly seen when people use OBD2 port plugin accessories on their vehicle. These accessories are … Read more