C0249 Mercury Mariner OBD Code

OBD/2 C0249 error code description and symptoms.

The Transmission Range Sensor (also referred to as the PRNDL input an/or neutral safety switch) tells the transmission control module (TCM) an the engine control module (PCM) that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is attached directly to the manual valve of transmission, so when the shift lever is moved from park to drive, the Transmission Range Sensor communicates this critical information to the above mentioned vehicle control module systems.

In most cases, the TCM is integrated into a single housing with the PCM. Nevertheless, the section of the module which controls (automatic) transmission function may be powered up separately. In any case, the TCM is typically powered using switched (only present with the ignition switch in the ON, start, or run position) voltage. This circuit is normally equipped with a fuse, fusible link, and/or a relay. Frequently, the PCM and TCM are powered using the same relay albeit by separate circuits. Access to a reliable vehicle information source will yield necessary details of the TCM power circuit for the specific vehicle in question.

C0249 Mercury Mariner Error Code Repair Process :

If your mirror passenger vertical switch circuit open check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C0249 and engine control unit are in charge of monitoring a bunch of different mirror passenger vertical switch circuit open, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercury Mariner C0249 OBD2 Code

A common cause of code C0249 is the failure of Mirror Passenger Vertical Switch Circuit Open, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Exhaust tube
Faulty starter motor
Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection

C0249 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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C0249 Mercury Mariner OBD Code

C0249 Mercury Mariner Error Code Repair Process :

Common Causes of Mercury Mariner C0249 OBD2 Code

C0249 code for other Mercury cars