Start the engine, and listen for a clicking sound at the injector at the problem cylinder. I took apart some things trying to figure it out and explained some things while I was there. The Honda Jazz is equiped with an i-DSI engine, which stands for intelligent Dual Sequential Ignition. He says.

The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Reconnect the negative cable to the battery. Posted and Edit by AutoCodes.com 04-09-2017, Fuel injectors harness is open or shorted, Fuel Injectors circuit poor electrical connection, Ignition coils harness is open or shorted, Ignition coils circuit poor electrical connection, Engine Light ON (or Service Engine Soon Warning Light). Open to all owners worldwide. Measure voltage between the ignition coil 3P connector terminal No. I know it is highly unusual, but perhaps the fuel filter requires changing. NO - Intermittent misfire due to injector malfunction etc.n, NO - Substitute a known-good ECM/PCM and recheck. So the thought crossed my mind to use tape to cover the light, but I guess I could check battery voltage and the fuel pump/filter.

10. NO - Intermittent misfire due to spark plug fouling, etc.

Turn the ignition switch OFF and remove the engine cover.

Check the DTC or the Temporary DTC with the scan tool. Exchange the ignition coil from the problem cylinder with one from another cylinder. 9. P0300 HONDA Description When a misfire occurs, engine speed will fluctuate. Determine which cylinder(s) had the misfire. Disconnect the ignition coil 3P connector from the problem cylinder. Have you replaced any parts? 9 (15A))* fuse and the ignition coil. Disconnect the injector 2P connector on the problem cylinder. Exchange the injector from the problem cylinder with one from another cylinder.

Since 3 months I drive a 2005 Jazz 1.2 liter engine. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring. This causes the combustion to go faster and gives a higher engine output. What are the symptoms on your vehicle for the P0300 Honda code? Disconnect the negative cable from the battery. If symptom/indication goes away, replace the original  ECM/ PCM.n.

Honda Jazz 2008 - Car Review ' Honest John www.honestjohn.co.uk > Car by Car > Honda Rating: 5 - ‎Review by Honest John - ‎Oct 15, 2015 Oct 15, 2015 - Door lock actuators failed on a 2010 Honda Jazz. Check the DTC or the Temporary DTC with the scan Tool. Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge.

Is DTC or Temporary DTC P0301, P0302, P0303 or P0304 indicated?

Cost of diagnosing the P0302 HONDA code Labor: 1.0 The cost of diagnosing the P0302 HONDA code is 1.0 hour of labor. Leave a comment below or tell us if the information above help you fix the code. Indeed I can't notice anything wrong while driving my car. Thanks for all your replies.

UK based forum since 2007 for all Honda Jazz and Fit owners offering technical and buying advice. Check for continuity between body ground and the appropriate ECM/PCM connector terminal (see table).

Does the misfire occur in the other cylinder whose ignition coil was exchanged? 2 to body ground with a jumper wire (see table). Exchange the spark plug from the problem cylinder with one from another cylinder. After checking and recording the freeze data. Help us improve AutoCodes.com. Measure voltage between body ground and the appropriate ECM/PCM connector terminal (see table). You are talking about £400 for a refurbished one—a lot of money for something that may not be the problem. Because it shifts from cylinder 1 and 4 to 2 and 3?

NO - Intermittent misfire due to poor contact at the ignition coil connector (no misfire at this time).n. If the engine speed fluctuates enough to cause the Crankshaft Position sensor signal to vary, the Engine Control Module can determine that a misfire is occurring. Measure the resistance between the injector 2P connector terminals No. Does the misfire occur in the other cylinder whose ignition coil was exchanged?

Exchange the spark plug from the problem cylinder with one from another cylinder.

Check the DTC or the Temporary DTC with a scan tool.

But battery is maybe 2 months old.. Just a thought, faulty coil pack?

The problem is, sometimes cylinder 1 and 4 have a misfire and sometimes cylinder 2 and 3 give a misfire.

Does the misfire occur in the other cylinder whose spark plug was exchanged?

A faulty sensor looks more likely. If symptom/indication goes away, replace the original  ECM/ PCM.n, NO - Repair open in the wire between the injector and the PGM-FI main relay.n, YES - Repair short in the wire between the  ECM/ PCM and the injector.n, YES - Replace the injector, then recheck.n, NO - Repair open in the wire between the  ECM/ PCM and the injector.n.