2023年9月7日 · P0300, and related, is a common DTC (diagnostic trouble code) that appears on most Volvo cars at some point in their life, and many times more often than you expect. This code is relatively easy to diagnose and repair, and typically does not cost much and can be completed by even the most armature of mechanics.

2019年12月19日 · Try to get the high temperature wire loom. IPD has it is some sizes. Try to get at least 300F rating. The cheap, general duty stuff degrades under the hood and especially on top of the head. Volvo: 2001 V70 T5, 1986 244DL, 1983 245DL, 1975 245DL, 1959 PV544, multiple Volvo parts cars.

2012年6月3日 · Problems have been progressing slowly over the last 3 months or so and are, loss of power, intermitent rough idle, stalling at low speed and some times just dying at idle speed (traffic lights).

2021年7月1日 · The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring. Start by checking for intake leaks, intake gaskets are a common cause of multi-cylinder misfiring. If no leaks are found the next step is to replace the spark plugs. If the problem persists more tests need to be done to diagnose the problem, see 'Possible Causes'.

2015年12月6日 · My XC90 under load started running really rough yesterday. It has thrown the following codes P0300 P0301 P0303 and P0140. These codes come right back P0300 P0301 P0303. I have replaced all plugs, replaced Coil Packs for Cylinders 1 & 3 and also replaced the Cam Shaft Sensor. If anyone has any ideas please let me know.

A P0300 Volvo diagnostic code indicates a random or multiple misfire. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. A P0302 Volvo code, for example, would tell you cylinder number two is misfiring.

2005年11月28日 · I'm getting an ODBII P0302 code on my car (listed in my sig). I replaced plugs, wires, cords, dist. cap and rotor all about a month ago. Just yesterday my check engine light came on with the P0302. The replacement parts I used are all listed in my sig as well. The plugs were supposedly pre-gapped to the correct specification.

P0300 = Multiple/Random Cylinder Misfire. P0301 = Cylinder #1 Misfire. P0300 = Cylinder #4 Misfire

2016年3月8日 · Check your plugs: pull em, check the gap, if you have a spark tester, use it. If not, just change them if they haven't been done anytime recently. Check your grounds, however unlikely, I've run across them---corroded grounds that caused obvious electrical faults, like dead packs. Could also be your fuel pump going or fuel regulator.

My 2016 XC90 T6 just got a CEL for P0302, which caused shaking when accelerating, running slow with a turtle sign (Engine System Reduced Performance). I just replaced two spark plugs and the ignition coil, but the problem still exists. What else I can do? The next thing should replace or clean all 4 fuel injectors?