Lexus Vibration, Tapping or Misfire After Cold Soak

Main Navigation

Advertisement
Social Connect
Resources
Our Brand Family
Underhood Service Logo
Technical resources to help diagnose and repair engine-related service issues.
Engine

Lexus Vibration, Tapping or Misfire After Cold Soak

Here are the steps to follow if experiencing vibration, tapping or misfire after a cold soak in your customers Lexus.

Underhood Service Staff Writers
By Underhood Service Staff Writers
Published:

Models:

2013-’16 CT200H

Related Articles

Symptom: 

Some CT200H vehicles may exhibit a vibration due to a rough idle or tapping noise from the hybrid transaxle after a cold soak. The check engine light may be on with codes P0300, P0301, P0302 or P0304 stored in the ECM. 

Correction: 

Lexus has released new software for the ECM to resolve the condition. If the vehicle has already been serviced for this condition, there will be a sticker affixed under the hood. After the vehicle is reflashed, allow the vehicle to cold soak to confirm that the problem is no longer present.

You May Also Like

External Engine

Alternator Testing For No Charge Conditions

Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.

Andrew Markel
By Andrew Markel
Andrew Markel is the director of content for Underhood Service magazine. He has been with Babcox Media for 20 years. He is a technician and former service writer and holds several automotive certifications from ASE and ­aftermarket manufacturers.
Published:

If only battery voltage is present at the battery on a running engine, does this mean the alternator is “bad?” No, it does not. It only means that the alternator is not charging, but does not reveal why. Therefore, it does not point to a faulty alternator. All too often, the alternator is condemned by technicians due to this test alone. The cause could instead be a module that distributes the power to the vehicle and regulates the alternator.

Read Full Article

More Engine Posts
Understanding Coolants

All-season coolant used inorganic acid technology and worked great for almost 30 years.

By Andrew Markel
Ignition System Do’s and Don’ts

Why do ignition systems give technicians problems when diagnosing ignition-related misfires? The answer is that some technicians use tests that might give inconclusive results or do damage to the coil or drivers inside a module.

By Andrew Markel
Tools To Service Serpentine Belts

Servicing the serpentine belt on some vehicles is a tough task.

By Andrew Markel
Battery Charging and Diagnostics

Here are six tips to use when diagnosing a vehicle with a dead battery. 

By Andrew Markel

Other Posts

Why Do Timing Chains Stretch?

As the timing chain wears, it can change the timing of the camshaft and crankshaft.

By Andrew Markel
Carbon Deposits and Direct Injection Engines

The primary cause of these problems is that fuel and added detergents are not hitting the back of the intake valves.

By Underhood Service Staff Writers
Acura Turbo Engine Service

It is important to check the operation of the solenoids that control vacuum to the actuators.

By Andrew Markel
Subaru EJ25 Head Gasket Problems

Most of the EJ head gasket failures occur around the 100,000-mile mark and start as a slow oil or coolant leak.

By Andrew Markel