Q: Can't get an emissions test due to faulty plug

asked by on

I have no power to the PCM or DLC to get an emissions test; the plug has no power. I checked the fuse and it is blown, but I can't get close with another fuse before it sparks. The cigarette lighter and DLC are on the same fuse, but I can't get the cigarette lighter out to replace it.

Hi! Since the power fuse was blown and your attempts to install a new fuse causes sparks, it would seem that there is a large draw or short on that power system. First, disconnect the ground cable to the battery and install the new fuse, then reinstall the ground cable to recheck the circuit. If the fuse blows again, then there is a significant short in that circuit and will require a skilled technician to diagnose and repair your blown fuse.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Can't get an emissions test due to faulty plug

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: P0755 & P0700 error codes

The problem with buying used tires and not having them balanced is the potential problems they can cause. Most transmissions - or more specifically, the Powertrain Control Module (PCM) which controls the transmission and drive line - contain incredibly...

Q: 2000 Chevy truck broke down on the side of the road, just shut down and now won’t even turn over battery is showing good voltage b

Hi Zach. Thanks for contacting us today. The first thing you should do is have the vehicle towed to your home. Second, it's possible that one of your ignition timing sensors, like the crankshaft or cam position sensor is damaged,...

Q: High CO2 emissions on a '98 Mitsubishi Carisma

Often it's a GDI because they carbon up the engines over time. Pay a mechanic to carbon clean the entire engine. Then you'd want to pray that the cat hasn't been ruined. It may already be ruined. It's a '98...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...