Textron Motors 408014, Diagnostic Manual

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23 DHB MPE850 MAR Rev B | 408014 | 408090 | 408101 | 408246 |
5 Troubleshooting with trouble codes
5.2 Description of trouble codes
Trouble code
Displayed fault
Trouble code description
Possible consequences
Affected part/system
►
Possible consequences/remedy
P0171 System Too Lean Bank 1
Fueling too lean.
The lambda control works outside of
permissible limits.
Loss of power.
Rough engine running.
The engine stalls.
Sensor lambda 1
► A leaky intake system or exhaust system
can cause the fault. Check the intake
system and exhaust system.
► A too low fuel pressure can cause the fault.
Check the fuel pressure. (See the vehicle
manufacturer‘s documentation.)
► Blocked injectors can cause the fault.
Check the injectors.
► Replace the affected part. (See the repair
manual.)
P0172 System Too Rich Bank 1
Fueling too rich.
The lambda control works outside of
permissible limits.
Loss of power.
Rough engine running.
The engine stalls.
Sensor lambda 1
► A too high fuel pressure can cause the
fault. Check the fuel pressure. (See the
vehicle manufacturer‘s documentation.)
► Leaky injectors can cause the fault. Check
the injectors.
► Replace the affected part. (See the repair
manual.)
P0201 Injector Circuit/Open – Cylinder 1
Open circuit at part or wire harness.
Engine does not start.
Rough engine running.
Injector 1st cylinder
► Check wiring in the wire harness to the
affected part. (See chapter 7 Wiring
diagram.)
► Replace the affected part. (See the repair
manual.)
P0202 Injector Circuit/Open – Cylinder 2
Open circuit at part or wire harness.
Engine does not start.
Rough engine running.
Injector 2nd cylinder
► Check wiring in the wire harness to the
affected part. (See chapter 7 Wiring
diagram.)
► Replace the affected part. (See the repair
manual.)