DTC P0131 - Lambda Bank 1 Sensor 1 Circuit Low
Conditions for setting dtc P0131
| ￭ | Engine Running |
| ￭ | Lambda Bank 1 Sensor ≤ 0.1 volts |
| ￭ | The above must be present for a period of 128 instances/cycles or greater to trigger DTC P0131 |
|
Step |
Action |
Value (s) |
YES |
NO |
|
1 |
- Key on, engine running - Within VCM Live, open the Lambda sensor DTC parameter, does the lambda sensor parameter display a voltage of 0.1 volts or less? |
≤ 0.1 volts |
Go to Step 2 |
Intermittent Issue (Refer to Intermittent Diagnostics) |
|
2 |
- Key OFF - Disconnect the Lambda 1 sensor connector and check for continuity between cavity 1 & the ECU connector "C" pin 13 - Do you have continuity? |
|
Go to Step 3 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
3 |
- Key OFF - Disconnect the Lambda 1 sensor connector and check for continuity between cavity 2 & the ECU connector "C" pin 14 - Do you have continuity? |
|
Go to Step 4 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
4 |
- Key OFF - Disconnect the Lambda 1 sensor connector and check for continuity between cavity 4 & the ECU 12v C14-4 - Do you have continuity? |
|
Go to Step 5 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
5 |
- Key OFF - Disconnect the Lambda 1 sensor connector and check for continuity between cavity 5 & the ECU connector "C" pin 24 - Do you have continuity? |
|
Go to Step 6 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
6 |
- Key OFF - Disconnect the Lambda 1 sensor connector and check for continuity between cavity 6 & the ECU connector "C" pin 23 - Do you have continuity? |
|
Go to Step 7 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
7 |
- Replace Lambda 1 sensor - Is the replacement complete? |
|
Go to Step 8 |
N/A |
|
8 |
- Clear any DTC from the ECU - Turn the ignition off and wait 30 seconds - Start the engine and operate the engine to full operating temperature - Observe the Check Engine Light on the Menu bar in VCM Live - After operating the engine within the test parameters, check for any store codes - Does the engine operate without any stored DTC's? |
|
System is now operational and ready to be tuned |
Contact HP Tuners Support |
Table 12. Lambda Bank 1 Sensor 1 Circuit Low Diagnostics Table
.png)
Figure 5. Lambda 1 Sensor Connector Cavity Location
