PACCAR MX (2004 Emissions) Fault Code: P0266 Cylinder 2 – Torque Contribution Too Low
PACCAR MX (2004 Emissions) Fault Code: P0266 Cylinder 2 – Torque Contribution Too Low
SET CONDITIONS:
The PCI ECU (D420) detects that the combustion contribution of cylinder 2 is lower relative to the other cylinders.
DIAGNOSTIC CONDITION:
This diagnostic runs when the engine is running at a steady speed and load, and the vehicle speed is steady.
CORRESPONDING OBD READINESS MONITOR:
Fuel system monitor
RESET CONDITION:
This DTC changes to inactive when the fault is no longer detected.
REPAIR VERIFICATION:
1. Clear all DTCs.
2. Test drive or operate the vehicle to meet the following conditions:
– Corresponding readiness monitor displays ‘Ready’
– Diagnostic conditions are met
– Set conditions are met
3. Did the DTC come back? (Can be pending, inactive or active)
– No, repair successful
– Yes, repair unsuccessful
POSSIBLE CAUSES:
1. Faulty cylinder 2 injector (under-fueling)
2. Faulty MX Engine Brake cylinder 2
3. Symptom: Slightly reduced power:
– Incorrect valve clearance
– Major imbalance in the drive shaft
4. Symptom: Engine block vibration at high load, damaged flywheel
5. Mechanical defect (for example damaged cam follower or broken valve)
ADDITIONAL INFORMATION:
1. The PCI ECU can detect and identify the cylinder contribution of every cylinder based on analysis of the rotational speed of the crankshaft using a:
– Cylinder-to-cylinder engine speed comparison and
– Cylinder-to-cylinder rotational crankshaft acceleration comparison
2. This DTC can be the result of another DTC that indicates too high of a combustion contribution of another cylinder.
-
John Deere & Hitachi Parts ADVISOR 2020 [08.2020] Offline DVD Spare Parts Catalog
John Deere $120.00Rated 0 out of 5
-
volvo Devtool Studio V2 / V3 / V4 Developer tool plus 2.6 / 2.7
Trucks software $35.00Rated 0 out of 5 -
2021 VOLVO PREMIUM TECH TOOL PTT V2.8.21 VCADS+DEVELOPER TOOL+APCI 2021/09 ( 1 PC )
Trucks software $85.00Rated 0 out of 5 -
JPRO 2022 v1 Commercial Vehicle Diagnostics V1 Software Download & Installation Service ( 1 PC )
JPRO $94.00Rated 0 out of 5 -
John Deere & Hitachi Parts ADVISOR 2020 [08.2020] Offline DVD Spare Parts Catalog
John Deere $120.00Rated 0 out of 5 -
download Hitachi Construction Machinery MPDr Ver 3.7.0.0 [10.2020] Diagnostic Software
Hitachi $76.00Rated 0 out of 5
Related products
-
SERVICE MANUAL Carrie Starbird TDB/TDS-215 and Starbird PlusTDB/TDS-219
CARRIE $24.00Rated 0 out of 5 -
MANUAL SERVICE Deutz Combine 5650 H, 5660 HTS5670 H / HTS5680 H, 5690 HTS
DEUTZ $38.00Rated 0 out of 5