--- title: P0113 and Your Nevada Smog Check | Xpress Smog Check Center url: https://xpresssmogcenter.com/codes/p0113/ business: Xpress Smog Check Center (Located inside Xpress Oil & Lube Center) locations: Reno Northwest: 6100 Mae Anne Ave, Reno, NV 89523, (775) 787-1000, Mon-Fri 8 am-5 pm, Sat 8 am-4 pm, Sun closed; Reno South: 4993 Longley Ln, Reno, NV 89502, (775) 828-6996, Mon-Fri 8 am-5 pm, Sat 8 am-3 pm, Sun closed type: Nevada smog check (vehicle emissions inspection), drive in, no appointment --- Located inside Xpress Oil & Lube Center - Smog check at two Reno locations - Oil change in the same visit - No appointment needed [Xpress Oil & Lube](https://xpressoilandlube.com/) - [Home](https://xpresssmogcenter.com/) - [Codes](https://xpresssmogcenter.com/codes/) - P0113 # P0113 and your Nevada smog check P0113 means the signal from intake air temperature sensor 1 is reading at the high end of its electrical range, which the computer usually interprets as extremely cold air or an open circuit. The code turns the check engine light on, and in Nevada a lit light is an automatic fail for a 1996 or newer light-duty vehicle. 4.7 stars from 550 Google reviews of the two Reno Xpress Oil & Lube Centers The intake air temperature sensor tells the engine computer how cold or warm the incoming air is, a small detail that changes how much fuel the engine needs. P0113 is a circuit code, which usually points to electrical trouble rather than the air itself. Here is what that means, and how it plays out when you drive in for a smog check in Reno. ## At a glance - SAE J2012: Intake air temperature sensor 1 circuit high. - Circuit high usually means the computer is seeing a signal like an unplugged sensor. - A lit check engine light fails a 1996 or newer light-duty vehicle in Nevada. - The federal emissions warranty may apply to some emission parts on newer vehicles. ## Why high voltage reads as cold In the SAE J2012 list, P0113 is "Intake air temperature sensor 1 circuit high." Most of these sensors are thermistors: their resistance drops as the air warms. The computer sends a reference voltage through the sensor and reads what comes back. Cold air means high resistance and a high signal; warm air means a low one. When the signal sits at the very top of the range, it looks like air far colder than any Reno morning, or like a sensor that is not connected at all. The computer recognizes that as a circuit fault, stores P0113 and lights the lamp. It then typically substitutes a default value so the engine keeps running. ## Where emissions come in Cold air is denser and needs more fuel. If the computer believed a false cold reading, it would add fuel the engine does not need, which raises emissions. Using a default instead is safer, but it is still a guess, so the OBD II system treats the fault as emissions-related and keeps the light on until the repair is finished. ## Common causes a repair shop checks Common causes a repair shop checks for a circuit-high code like this include an unplugged or loose connector at the sensor, a broken or chafed wire, corrosion in the connector, and a failed sensor. On many vehicles the sensor is built into the air flow sensor housing, so work on the air box or intake tube can disturb it. A repair shop decides which applies. ## Recent work under the hood If the light came on right after an air filter change or other work near the intake, mention it when you visit a repair shop. A connector that did not get pushed back fully is a well-known reason for circuit codes. Whatever the cause, avoid clearing the code yourself right before your test. The DMV explains why: clearing codes or disconnecting the battery erases the computer's memory of its self-checks, and a vehicle tested in that state is rejected as not ready. A rejection is not a failure, but the car then needs up to a week of driving under varying conditions, city and highway, before it can be tested again. ## The smog check outcome Nevada does not measure the exhaust of a 1996 or newer light-duty vehicle; the analyzer reads the OBD II computer, and a lit check engine light is an automatic fail. So P0113 fails the test even when the car drives normally. Testing anyway, as the DMV advises, gets you the failed report. It explains why the vehicle failed, starts the waiver process, and helps with a ten-day movement permit at reduced cost if your registration has expired. ## Next steps after a fail - Take the car to a repair shop with the failed report. The DMV recommends a 2G licensed authorized station for emissions repairs. - Keep every receipt. A Washoe waiver needs at least $200 in related parts and labor at a 2G station, or at least $200 in related parts the owner bought within 14 days after the initial test. - After the repair, give the car up to a week of mixed driving so the monitors finish, then retest. - On a newer vehicle, ask the dealer about a recall or the federal emissions warranty first: federal law covers some expensive emission components for up to 8 years or 80,000 miles. ### Sources - [dmv.nv.gov/emission_obd.htm](https://dmv.nv.gov/emission_obd.htm) (Nevada DMV OBD page: automatic fail, test anyway, 2G station recommended, emissions warranty; read 11/3/26) - [dmv.nv.gov/regrenewal.htm](https://dmv.nv.gov/regrenewal.htm) (Nevada DMV: failed tests and Washoe waiver receipts; read 11/3/26) - [obd-codes.com/p0113](https://www.obd-codes.com/p0113) (public code reference for the P0113 definition; read 11/3/26) ### P0113, the generic definition Intake air temperature sensor 1 circuit high The SAE J2012 code title. The same P0 code means the same thing on every 1996 and newer OBD II vehicle; the cause behind it differs car to car. ### Your location: Reno South - Call [(775) 828-6996](tel:+17758286996) Mon-Fri 8 am-5 pm, Sat 8 am-3 pm, Sun closed - Address 4993 Longley Ln, Reno, NV 89502 [Directions](https://www.google.com/maps/dir/?api=1&destination=4993+Longley+Ln%2C+Reno%2C+NV+89502&destination_place_id=ChIJc5xNCcI_mYARXjHn3y79iJw) ### Related - [Check engine codes](https://xpresssmogcenter.com/codes/) - [P0101 and your Nevada smog check](https://xpresssmogcenter.com/codes/p0101/) - [P0128 and your Nevada smog check](https://xpresssmogcenter.com/codes/p0128/) - [Check engine light and your smog check](https://xpresssmogcenter.com/smog-check/check-engine-light/) - [Repair and retest](https://xpresssmogcenter.com/smog-check/repair-and-retest/) Located inside Xpress Oil & Lube Center Both smog check locations sit inside an Xpress Oil & Lube Center, the locally owned Reno drive-in that has served this town since 1983. Drive in, no appointment; get your oil changed in the same visit. [About us](https://xpresssmogcenter.com/about/) ## More air flow, egr and idle codes [P0101 Mass or volume air flow (MAF) circuit range/performance Learn more](https://xpresssmogcenter.com/codes/p0101/)[P0401 Exhaust gas recirculation (EGR) flow insufficient detected Learn more](https://xpresssmogcenter.com/codes/p0401/)[P0411 Secondary air injection system incorrect flow detected Learn more](https://xpresssmogcenter.com/codes/p0411/)[P0507 Idle air control system RPM higher than expected Learn more](https://xpresssmogcenter.com/codes/p0507/) ## If the light is on at your smog check [### Check engine light and your smog check Why a lit check engine light decides the test. Learn more](https://xpresssmogcenter.com/smog-check/check-engine-light/)[### Failed a smog check What the failed report means and the steps that follow. Learn more](https://xpresssmogcenter.com/smog-check/failed-smog-check/)[### Repair and retest Getting the repair done and coming back for the second test. Learn more](https://xpresssmogcenter.com/smog-check/repair-and-retest/)[### Rejected: not ready to test Why a car can be turned away without failing. Learn more](https://xpresssmogcenter.com/smog-check/not-ready-rejected/) ## P0113 questions Still have a question? Call either Reno location or just drive in; there is no appointment to make. ### Is P0113 serious? It is usually electrical and the car often runs normally on a default value. It still fails a Nevada smog check while the lamp is lit. ### What does sensor 1 mean? It is the first intake air temperature sensor. Some vehicles have a second one elsewhere in the intake. ### Is this the same as the air flow code? No, but the parts are often in one housing. See [our P0101 page](https://xpresssmogcenter.com/codes/p0101/) for the air flow code.