Saab 95, 2001. Got error code p1266 which is a bad earth on injector, but I have been told p1266 doesn't exsist. If said code does exsist how do I fix the earthing problem.

Code P1266 on a HINO 700 can indicate a fault or issue with the injection control pressure system. Here are some steps to fix this code:

1. Check the engine oil level and ensure it is at the correct level. Low oil level can cause issues with the injection control pressure system.
2. Inspect the oil filter and replace it if necessary. A clogged or dirty oil filter can restrict oil flow and cause pressure issues.
3. Check for any leaks or damage in the injection control pressure system. Look for oil leaks around the high-pressure oil pump, hoses, or fittings.
4. Inspect the fuel injectors for any signs of damage or leaks. Faulty injectors can cause issues with the injection control pressure system.
5. If there are no visible issues, it may be necessary to use a diagnostic tool or scanner to further troubleshoot the problem. The scanner can read and interpret the error code and provide more specific information on the exact cause of the issue.
6. If you are unable to identify or fix the issue yourself, it is recommended to take the vehicle to a qualified mechanic or HINO dealership for further diagnosis and repair.

Keep in mind that these steps are general guidelines and may vary depending on the specific model and year of the HINO 700. It is always best to consult the vehicle's owner's manual or seek professional help for accurate and specific instructions.

5.7L
no code told, why skip the most important fact?
P03xx (what is the XX)

code 300 is means all cylinders misfire,
301,to 308
my wild wild guess is P030x code
this misfire, means, this. in TRUTH
that cylinder has bad combustion. (means weak only or dead)
caused by 3 things.
1: bad spark plug. or wires to it. or cop coil if is.
2: bad injector.
3: bad compression this cylinder or water or oil landing here.
3b: bad cam lob on X
3c bad piston on X cracked,.
3d, valves burned, X
and more, even cracks in X. all things inside X

the service manual is online
https://eautorepair.net/Marketing/Default.asp


the injectors all have a 12vdc power rail to a fuse. 5.7L/4.7
as do all 8 COP coils. (i bet one is bad or just boots to it bad))
all 8 injectors use that one 12vcd fused feed line
these are called PnP injectors. 12v, 0v, 12v, 0= fire.
the coil on X unstated injector is about 12 OHMs , no not zero nor infinity a super basic test that
moving the injector if bad, (side swaps) the TDC error moves with it.one more basic test.
a simple NOID lamp test shows if the PCM is firing it.
here is the schematic in part.




now all tests a short list
All fuses good , not guessing testing./
spark plug good on X
spark COP boot replaced, $15 cost, cheap on X
compression on X passes
spark tip not soaked in OIL or ANTIFREEZE on X
Injector ohms out good and NOID lamp passes on X

the injector and COps run off fuse #10- 30amps.
if blown the ASD relay is dead, so fuse 10 is not dead
because ASD is closed now and engine runs. (no stated be inferred)

bad engine, bad spark or bad injector, on cylinder X
X not told.
there are other possibles. like cylinder X has a vacuum leak
in Intake X port, gasket cracked, lean burn misfire.
leaking injector
we do the FSM (SM) book injector leakdown test and balance test to find that.
and more. ask for more tell what X is?

It can be either one. Try swapping injectors 2 and 3. Clear the code and run the car. If the code changes to 203, replace the injector. If it stays at 202, check the wiring.

OBD-II Trouble Code: P0201 Cylinder 1 Injector Circuit ...

www.obd-codes.com/p0201

The symptoms for this code will likely be a misfire and a rough running ... First, using a DVOM check the resistance of the injector. ... This is for a 2003 Saab 9-3 with fault code P0201 (Cylinder 1 Injector Circuit ... If you still need help regarding the P0201 trouble code, please post your question in our FREE car repair forums.

Stuck Open Fuel Injector (how to fix) - YouTube

? 8:25
https://www.youtube.com/watch?v=jsl531-6q-A
Sep 13, 2011 - Uploaded by ScannerDanner
2001 Dodge Grand Caravan 3.3 with a #5 injector control wire shorted to ground. ... (Injector control voltage ...

2002 Chrysler 3.8 Liter Injector Code Fix p0204 - YouTube

? 4:13
https://www.youtube.com/watch?v=GX3kQloqIBw
Mar 31, 2013 - Uploaded by Mickey Smith
(P0204 Injector Circuit - Open Cylinder) This will show you what i found wrong. Your number 4 injector ...Missing: cavalier

1999 Chevy Cavalier Error code PO200 and PO200P (pending ...

forums.automotive.com > ... > General Auto Repair

P0304 code means - Cylinder 4 Misfire detected.

Possible causes are:

- Faulty spark plug 4
- Clogged or faulty fuel injector 4
- Faulty ignition coil 4
- Fuel injector 4 harness is open or shorted
- Fuel injector 4 circuit poor electrical connection
- Ignition coil 4 harness is open or shorted
- Ignition coil 4 circuit poor electrical connection
- Insufficient cylinder 4 compression
- Incorrect fuel pressure
- Intake air leak

A common problem is a bad crank sensor on a 9-5 2.0t and 2.3t! if is bad, it doesn t send signal to the ECM, then the ECM do not send power to the pump relay! it is always better check fault code first

P0203 - Cylinder 3 Injector Circuit Malfunction

P0203 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector and when the injector is activated, the PCM expects to see the voltage pulled "low" or close to zero. When the injector is switched off, the PCM expects to see a voltage that is close to battery voltage or "high". If it doesn't see the expected voltage the PCM will set this code. The PCM also monitors resitance in the circuit. If the resistance is excessively low or high it will set this code.

The symptoms for this code will likely be a misfire and a rough running engine. Poor acceleration. The MIL will also be illuminated.

The causes of a P0203 engine light code could be any of the following:
Bad injector. This is usually the cause of this code but doesn't rule out the possibility of one of the other causes
Open in the wiring to the injector
Short in the wiring to the injector
Bad PCM

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa.
Jose.

Hi there,

A P0300 diagnostic code indicates a "random" or "multiple" misfire.

Unfortunately, P0300 doesn't tell you specifically which cylinders are mis-firing, nor why (code P0301 would indicate cylinder #1; P0302 would indicate cylinder # 2 etc). This means there could be an issue with any number of components/circuits relating to the ignition/combustion circuits.

I would recommend you check for the following:

• Faulty spark plugs and/or HT leads
• Faulty coil (pack)
• Faulty oxygen sensor(s)
• Faulty fuel injector(s)
• Burned exhaust valve
• Faulty catalytic converter
• Stuck/blocked EGR valve / passages
• Faulty camshaft position sensor

Sometimes the underlying cause of a random misfire is often a lean fuel condition, which may be due to a vacuum leak in the intake manifold, unmetered air getting past the airflow sensor, or even an EGR valve which is stuck open.

Hope this helps...

bad earth check wire to pick up

head gaskets do not "dry out"
running rough indicates injector problems --stale fuel dirty injectors or sticking injectors
run the fault codes to determine fault area
oil around spark plugs indicates that the rocker cover seal under the plug tube is leaking into the plug area