Code p0202 and p0205 dodge grand caravan?

Question

Ok so I'm back again with yet another problem. A couple of weeks ago I had a problem with my fuel injectors, and latter found out that my harness was fried and the wires were melted all the way to the cooper. We fix the wires so we can get around while the new one gets delivered. Everything was ok for the must part, the idle was still rough but we were not getting any codes. So finally the new harness arrives and we installed it right away. We started the car and noticed right of that it started sputtering and the engine was hesitant. The check engine light came on and it reads, Codes p0202 and p0205. So we changed the injectors around to see if the codes change and to see if it was the actual injector messing up, but the codes did not change and the problem still persist. Please help! I am running out of options.Thank you.

2002 dodge grand caravan sport 3.3l v6 flex fuel FWD

Code p0202:
- Faulty fuel injector 2
- Fuel Injector 2 harness is open or shorted
- Fuel injector 2 circuit poor electrical connection

Code p0205
- Faulty fuel injector 5
- Fuel Injector 5 harness is open or shorted
- Fuel injector 5 circuit poor electrical connection

Answer 1

So I assume you changed the harness that connects the individual injectors to the main engine harness.

If the two affected injectors were swapped around and work in the 1,3,4,6 positions, then your problem must be between the harness connector at the main injector harness and the PCM (Powertrain Control Module).

The other possibility is that the short caused a failure of the injector driver in the PCM.

I would first test the #2 & #5 injector with a Noid light, this is an LED tester that lights up when the PCM grounds the control circuit for the individual injectors.

This light should flash rapidly as the engine is running or simply cranking.

If it does not light there is a problem in the circuit either with the power supply or ground circuit.

In order to identify where the problem is you must check the individual resistance of the injector(s) circuit.

Disconnect PCM, Disconnect injector harness.

Measure resistance between each ground control circuit, if any or all show an open or short to ground the issue is in the main harness.

I believe all the injectors share a common power circuit, and since you are only getting 2 of the 6 injectors as faults the issue will likely be a shorted or open circuit in the main harness.

The other possibility is the short has caused the injector driver to fail in the PCM.

I would advise against installing a PCM until you have ruled out a wiring issue as the replacement PCM can be damaged as a result of excess current pulled thru the shorted wire.

Closely scrutinize every inch of the main engine harness between the two points listed above and I'll bet you will find a bare wire or burned/ overheated portion of the harness.

Remember the entire wire that shorts will turn into a heating element and burn not only its insulation off it will cut thru any wire in close proximity to it. You may have to cut away a good portion of the convolute tubing covering the harness to thoroughly inspect the wiring!

Good luck

Answer 2

Dodge Caravan Codes

Answer 3

It is possible that it shorted the injector drivers in the computer for 2 and 5.You can check with a meter to be sure there is power and ground at the connector while it is running.

Answer 4

IF you have LESS than 100k miles, on it, TAKE IT BACK TO CHRYSLER! It is ON THEM to repair and diagnose it! I would start with an ENGINE BAY wash down with GUNK ORANGE! Many WIRING HARNESSES can get ATTACKED by ROAD SALT that i has been sitting under the hood for MONTHS! IT WILL disrupt ELECTRICAL CONNECTIONS! A THOROUGH engine bay CLEANING with GUNK will RECONNECT these issues! TAKE $20-30 to ANY OI CHANGE center and have them Clean your IDLE AIR CONTROL VALVE and THROTTLE BODY to SHOWROOM clean! have them check your EGR valve to see if it is full of CARBON and ****! The IAC valve is what controls the amount of AIR entering your engine! the IAC adds MORE AIR as the O2 sensor DEMANDS! A CLOGGED UP IAC can MIMIC a bad INJECTOR! NO CARS need NEW INJECTORS any more, expect MAYBE on older GM cars! They ALL use BOSCH injectors, and modern fuels are LOADED with detergents to keep them CLEAN! Otherwise our AIR would STILL GET STINKED UP! FORGET THE INJECTOR IDEA!