CS35 2013.04
3.1.13-145 3.1.13-145Electronic Control System - ME7
DTC P0130, P0131, P0132, P0133, P0134, P2195, P2196
1. DTC Description
2. Possible Sources
Fault Code Description Definition
P0130
Upstream oxygen sensor signal
unreasonable
After vehicle starts, the electronic control module
work under open loop mode, which is to ignore the
pre - catalytic oxygen sensor signal voltage in the
calculation of air - fuel ratio. ECM provides approxi-
mately 450 mV reference voltage for pre - catalytic
oxygen sensor. When the engine is running, the pre
- catalytic oxygen sensor start heating and start gen-
erating 0.1 ~ 0.9 V voltage. The voltage goes along
the reference voltage fluctuations. Once the control
module finds the pre - catalytic oxygen sensor volt-
age exceeding the set threshold, then it will immedi-
ately goes into closed loop mode. ECM determines
the air - fuel ratio based on the pre - catalytic oxygen
sensor voltage.
If the pre - catalytic oxygen sensor voltage is greater
than 0.45 V, indicating that the mixture is too thick. If
the pre - catalytic oxygen sensor voltage is below
0.45 V, it means the mixture is too thin.
ECM make the terminal 2 of the pre - catalytic
oxygen sensor connector E05 at low - potential
through terminal 26 of wiring harness connector
E01, when oxygen sensor get to normal operating
temperature, it transmit oxygen sensor signal to the
ECM through terminal 1 of connector E05 that con-
nects to terminal 18 of connector E01 on the ECM.
P0131
Upstream oxygen sensor signal
voltage low
P0132
Upstream oxygen sensor signal
circuit voltage too high
P0133 Upstream oxygen sensor aging
P0134
Upstream oxygen sensor circuit
signal circuit fault
P2195 Upstream oxygen sensor aging
P2196 Upstream oxygen sensor aging
Fault
Code
Test Tactics
Setting Conditions (Control
Strategy)
Fault
P0130
Pre - catalytic
oxygen sensor sig-
nal couples with the
heating circuit
• Pre - catalytic oxygen sensor reach the
working temperature
• Oxygen sensor output voltage is higher
than 2.0 V
• Sensor circuit fault
• Sensor fault
•ECM fault
P0131
Signal short circuit
to ground
• Pre - catalytic oxygen sensor output volt-
age is less than 0.06 V
P0132
Front oxygen volt-
age is too high
• Pre - catalytic oxygen sensor voltage is
higher than 1.5 V
• Engine speed greater than 25 RPM
• Target λ ＝ 1
• Exhaust temperature is lower than 850 ℃
• Oxygen sensor reaches the working tem-
perature for 150 s
mashinesoft.com
09120146259
To Next Page
Loading...
