2014 Nissan Murano Check Engine Light in Mesa, AZ

It means the engine computer stored a diagnostic trouble code (DTC) identifying a system fault—examples include P0442 (EVAP leak) or P0300 (misfire).

Your Murano’s OBD-II system sets the light when it detects a condition outside normal limits. A scan retrieves the code, and freeze-frame data shows when it occurred. In Mesa’s desert heat, EVAP and sensor issues are common, but only testing confirms the root cause. Our team can interpret manufacturer-specific data your typical code reader might miss.

• Codes point to systems (EVAP, O2, MAF, ignition), not a single guaranteed part
• Freeze-frame data helps recreate the exact conditions of the fault
• Schedule a diagnostic: schedule service

Common causes include EVAP leaks (P0442/P0455), O2 sensor faults (P0138/P0158), MAF range issues (P0101), catalyst efficiency (P0420), and misfires (P0300).

The 3.5L V6 uses multiple sensors to manage fuel and emissions. A loose gas cap can trigger EVAP codes, while aging O2 sensors or a dirty MAF can disturb fuel trims. Misfires left unresolved can overheat the catalytic converter. A targeted diagnostic in Mesa confirms which component is failing before parts are replaced.

• EVAP small leak: inspect cap, purge/vent valves, and hoses
• MAF issues: verify sensor data and intake leaks before replacing parts
• Misfire: test coils, plugs, injectors, and compression

A steady light means drive cautiously to service; a flashing light means stop driving—flashing indicates a severe misfire that can damage the catalytic converter.

If the Murano drives normally and the light is steady, reduce load and schedule service soon. If it’s flashing, continuing to drive can overheat the converter and increase repair costs. In hot Mesa weather, overheating risks rise more quickly, so timely diagnosis protects both safety and your budget.

• Flashing MIL = potential catalyst-damaging misfire
• Steady MIL = non-urgent but should be checked promptly
• If drivability is poor, tow the vehicle to prevent further damage

Parts stores read basic codes; our Nissan-certified technicians perform full diagnostics with factory-level scan data, pinpoint tests, and a written estimate.

A code like P0101 can be caused by a MAF sensor, wiring, intake leaks, or software. Dealer-level tools access manufacturer-specific data, run active tests, and view freeze-frame details to isolate the true fault. You’ll get documented results and repair options at Larry H. Miller Nissan Mesa in the Phoenix East Valley.

• Factory scan data and bi-directional tests for accurate fault isolation
• Guided diagnostics reduce parts guessing and repeat visits
• View offers before you book: service specials

No—resetting clears OBD-II readiness monitors to “Not Ready,” which typically fails emissions until all monitors complete their drive cycles.

After a battery disconnect or code clear, your Murano must complete specific driving conditions before monitors report “Ready.” If a fault remains, the light will return. The most reliable route is to fix the underlying issue, confirm monitors are ready, and then test. Our Mesa team can verify readiness before you head to inspection.

• “Not Ready” monitors can trigger an automatic test failure
• Drive cycles vary by system; we can advise the correct sequence
• Book a verification check: schedule appointment

Schedule at Larry H. Miller Nissan Mesa, 2025 W Riverview Auto Dr, Mesa, AZ 85201, using our online portal.

We serve Mesa, Tempe, Scottsdale, Chandler, Gilbert, and Phoenix with OEM-authorized diagnostics for the 2014 Nissan Murano. Book online, review service specials, and receive a clear estimate before any repair work begins. Our location is just off Loop 202 at Dobson Road for easy access.

• Online booking: schedule service
• Factory-authorized testing and documentation
• Convenient East Valley access near Loop 202 & Dobson

During a 2014 Nissan Murano diagnostic at Larry H. Miller Nissan Mesa, a technician begins with an initial OBD-II scan to capture DTCs and freeze-frame data. Next, we review data streams to compare sensor values against Nissan specifications. If needed, we perform isolation testing—such as smoke testing the EVAP system, verifying MAF grams/second with no intake leaks, and coil/injector checks on misfires. You receive a written estimate before any repair is authorized. If your Murano qualifies for warranty coverage, work is completed in our certified facility to help protect eligibility. Ready to proceed or just need answers first? View current service specials and schedule service online.

Our Mesa service center supports drivers across the Phoenix East Valley and Greater Phoenix metro area—including Tempe, Scottsdale, Chandler, Gilbert, and Phoenix—with advanced diagnostics tailored to the 2014 Nissan Murano. Factory-level scan capability goes beyond a generic code reader, enabling bi-directional tests and manufacturer-specific data that speed accurate root-cause analysis. Arizona heat and large day–night temperature swings can aggravate EVAP, sensor, and cooling-related codes, so we validate concerns under local conditions. Find us at 2025 W Riverview Auto Dr, Mesa, AZ 85201, just off Loop 202 and Dobson Road. Have a light on now? Book a convenient time with our online schedule service tool or check our service specials before your visit.

Many 2014 Nissan Murano visits involve codes such as P0442/P0455 (small/large EVAP leak), P0101 (MAF range/performance), P0138/P0158 (high O2 sensor voltage), P0420 (catalyst efficiency), and P0300 (random misfire). P0442 often traces to a loose gas cap or EVAP plumbing, while P0101 may reflect a dirty MAF or intake leak. Misfires left unresolved can damage the catalytic converter, turning a small fix into a major expense. Catalyst efficiency codes deserve prompt attention to protect emissions hardware. Bring your 2014 Nissan Murano to Larry H. Miller Nissan Mesa in Mesa for an accurate diagnosis — schedule service.