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Vehicle engine and/or automatic transmission

Code: P0022 - The intake camshaft timing on bank 2 is over-retarded (delayed); this affects how the engine’s valves open and close.

When you see the p0022 code pop up, what your car’s telling you is pretty straightforward: the computer’s noticed the intake camshaft on bank 2 is lagging behind-timing’s over-retarded. From my time under the hood, I know the intake camshaft is responsible for controlling when air moves into the cylinders, and most modern engines use variable valve timing (VVT) to tweak this for better performance and fuel economy. The PCM, or engine computer, is constantly watching the relationship between the camshaft and crankshaft through sensors. If it sees the camshaft isn’t keeping up with the crank, you get this code. In other words, your engine’s timing is off on that bank, and that’s not something to take lightly. When p0022 shows up, it’s your car’s way of waving a red flag about the timing on that side of the engine.

Causes of P0022 code

From experience, the most common culprits for P0022 are issues with the variable valve timing system or oil-related problems. Here’s what I usually find when diagnosing this code:

Faulty camshaft variable timing solenoid (sometimes called the VVT solenoid)
Low engine oil level or oil that’s dirty or old
Low oil pressure, which can be caused by worn engine parts or a failing oil pump
Failed variable valve timing actuator
Worn or stretched timing chain, or a bad timing chain tensioner or guide
Incorrect engine timing, possibly from a slipped chain or belt
In rare cases, a problem with the PCM (like needing a software update)

Most often the issue is with the VVT solenoid or oil problems, but it’s important to check everything on this list to be sure.

Symptoms of P0022

When this code is active, you’ll probably notice a few things aren’t right with how your car runs. Here’s what drivers usually report, and what I look for myself:

Check Engine Light is on - that’s usually the first sign
Rough idle, hard starting, or even stalling, especially when the engine is cold
Noticeable drop in engine performance - the car might feel sluggish or unresponsive
Poor fuel economy - you might find yourself filling up more often
Sometimes, a rattling noise from the engine, which can be a sign of timing chain issues

If you’re noticing any of these, especially combined with the warning light, it’s time to get it checked out.

Diagnosis steps for obd code P0022

Here’s how I approach P0022, step by step, to get to the bottom of it:

First, I always check the engine oil level and condition. Low or dirty oil is a common cause, and it’s a quick fix if that’s all it is. Make sure the oil is at the right level and looks clean.
Next, I’ll clear the code and see if it comes back. Sometimes, a one-off glitch can set the code, but if it returns, there’s definitely a problem.
Then, I use a scan tool to monitor the camshaft and crankshaft sensor readings while the engine runs. I’m looking for any signs the camshaft isn’t moving as it should.
After that, I test the VVT solenoid on bank 2. I’ll check the wiring and connectors for damage or corrosion, then use a multimeter to see if the solenoid is getting power and working properly. Sometimes, I’ll remove it and check for sludge or debris blocking the oil passages.
If the solenoid checks out, I’ll inspect the timing chain and its tensioner. This part can get stretched or the guides can wear out, causing the timing to slip. Listen for rattling noises and, if needed, remove the timing cover for a closer look.
Finally, if everything else looks good, I’ll check for any technical service bulletins (TSBs) or PCM updates related to this code. Sometimes, the fix is a software update from the manufacturer.

It’s best to start with the simple stuff - oil and solenoid - before moving on to the more involved timing checks. Don’t forget to have someone assist you if you’re checking the timing chain, as it can be tricky.

Common mistakes when fixing P0022 trouble code

In cases like this, I often see folks jump straight to replacing parts without checking the basics. Here are some common pitfalls to avoid:

Ignoring the oil - low or dirty oil is a leading cause, and it’s easy to overlook
Swapping out the VVT solenoid without testing it first - sometimes the wiring or connector is the real problem
Not checking for TSBs or PCM updates - manufacturers sometimes release fixes for these issues
Skipping a thorough inspection of the timing chain and tensioner, especially if there’s a rattling noise

It’s always better to diagnose step by step, rather than just throwing parts at the problem.

How serious is the P0022 engine code

If you’re asking yourself whether you can ignore P0022 for a while, let me save you the headache-don’t risk it. Over-retarded timing isn’t just a nuisance; it can quickly escalate to serious engine damage. I’ve seen cars come in with this code that ended up with bent valves, damaged pistons, or ruined timing chains because the driver put it off. If the timing chain skips a tooth or snaps, you’re looking at a hefty repair bill, or even a replacement engine. So, when you spot p0022, treat it like a ticking time bomb for your motor. Get it checked out right away-the longer you wait, the greater the gamble.

How to repair dtc P0022 issues

Here’s what I typically do to fix P0022, based on verified repair procedures:

Change the engine oil and filter if it’s dirty or low - this alone can sometimes clear the code
Replace the camshaft variable timing solenoid if it’s faulty or clogged
Repair or replace any damaged wiring or connectors to the VVT solenoid
Replace the variable valve timing actuator if it’s not working correctly
Inspect and, if needed, replace the timing chain, tensioner, or guides if they’re worn or stretched
Update the PCM software if there’s a TSB or manufacturer update available

Most often, the fix is either an oil change or a new VVT solenoid, but it’s important to check everything to avoid missing a bigger issue. This error is not limited to just one automaker - it can also happen on car brands like Ford, Toyota, and others.

Conclusion

To sum it up, P0022 means your intake camshaft timing on bank 2 is running late, usually because of oil or VVT system problems. It’s not something to ignore - the risks to your engine are real, and the symptoms can make driving unpleasant or even unsafe. I recommend starting with the basics: check your oil, inspect the VVT solenoid, and don’t skip any steps. The most reliable way to resolve this is a thorough, step-by-step diagnosis, fixing each issue as you find it. Don’t put this off for later - your engine will thank you.

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