Kohler KG2204 Service page 38

P-Code SPN FMI
P2177 1695 18
P2178 1695 16
P2187 1695 18
P2188 1695 16
P2191 1695 18
38 Diagnostic Troubleshooting Codes
Description
System Too Lean Off
Idle
System Too Rich Off
Idle
System Too Lean at Idle
System Rich at Idle
System too Lean at
Higher Load
Possible Cause
 Problem with the
closed-loop feedback
control.
 Problem with the
closed-loop feedback
control.
 Problem with the
closed-loop feedback
control.
 Problem with the
closed-loop feedback
control.
 Problem with the
closed-loop feedback
control.
Corrective Action
 Check for misfires.
 Check fuel quality.
 Check fuel pressure regulator and
outlet pressure.
 Check for exhaust leaks.
 Check for intake manifold leaks.
 Troubleshoot the HEGO sensor
for bad leads. Refer to
Section 4.7.
 Replace the HEGO sensor. Refer
to Section 5.7.
 Check for misfires.
 Check fuel quality.
 Check fuel pressure regulator and
outlet pressure.
 Check for exhaust leaks.
 Check for intake manifold leaks.
 Troubleshoot the HEGO sensor
for bad leads. Refer to
Section 4.7.
 Replace the HEGO sensor. Refer
to Section 5.7.
 Check for misfires.
 Check fuel quality.
 Check fuel pressure regulator and
outlet pressure.
 Check for exhaust leaks.
 Check for intake manifold leaks.
 Troubleshoot the HEGO sensor
for bad leads. Refer to
Section 4.7.
 Replace the HEGO sensor. Refer
to Section 5.7.
 Check for misfires.
 Check fuel quality.
 Check fuel pressure regulator and
outlet pressure.
 Check for exhaust leaks.
 Check for intake manifold leaks.
 Troubleshoot the HEGO sensor
for bad leads. Refer to
Section 4.7.
 Replace the HEGO sensor. Refer
to Section 5.7.
 Check for misfires.
 Check fuel quality.
 Check fuel pressure regulator and
outlet pressure.
 Check for exhaust leaks.
 Check for intake manifold leaks.
 Troubleshoot the HEGO sensor
for bad leads. Refer to
Section 4.7.
 Replace the HEGO sensor. Refer
to Section 5.7.
TP-6903 5/16a