CarTalk.com Blogs Car Info Our Show Deals Mechanics Files Vehicle Donation

2012 RAM 2500 check engine light @ 3000 rpm

5.7 hemi, 2012 ram 2500. When towing or kick into passing gear, 3000 rpm, check engine light starts blinking, code p0301, I changed spark plugs, coil pack, still happens at 3000 rpm. What does anyone think?

A blinking Check Engine light means a major misfire is occurring.

If the vehicle is driven with a blinking Check Engine light, damage to the engine/catalytic converters can occur.

Stop driving the vehicle until it’s determined what’s causing the Check Engine light to blink.

Tester

1 Like

I would suspect a weak or restricted injector on cylinder #1.