Skip the auto shop - Our mechanics make house calls

Q: Truck has a wrench light and won't clean exhaust filter

asked by on

I changed the oil, oil filter, and both fuel filters. after I finished I drove the truck about 30mins and the truck tried to clean the exhaust filter. that light stayed on for 5 seconds then the wrench light came on and stays on. I went home and hooked up the code reader and it didn't give any codes. I started driving again and the same thing happened again. how do I get the wrench light to go away? did I screw up putting the fuel filters in?

My car has 100000 miles.
My car has an automatic transmission.

A: Hello. If the wrench light is coming on, th...

Hello. If the wrench light is coming on, then there is an issue that the computer is seeing. Some generic scan tools cannot read the correct codes in the computer. I use a Ford scan tool on this. It sounds like it may from a fuel pressure issue from the fuel filter change, or it may be something different. If it is the exhaust filter then it may need to be replaced or baked to clean it. If you need to have this engine light issue resolved, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the warning light and have it repaired accordingly.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Fan runs when car is off. Overheats when idling for a 3-minute period

Hey there. This can be caused by a number of things such as low coolant levels, a faulty thermostat, or a failing coolant fan switch. As you may know, the coolant fan switch helps to maintain the proper coolant temperature...

Q: Heater only works on high

It sounds like you may have a faulty blower motor potentially drawing too much power from the resistor causing it to burn itself up. As you know, the individual blower motor resistor inside the pack are usually wire wound and...

Q: Noise in the front end while turning the steering wheel

This is a common sound when the ball joints begin to wear out. As the ball joints are subjected to various loads and pressure depending on the weight of the vehicle and force/torque of each turn, this squeaking may vary...

Related articles

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...