DTC P1842 - Transmission Line Pressure Below Minimum Threshold
Conditions for setting dtc P1842
| ￭ | Engine Running |
| ￭ | Transmission Line Pressure Sensor ≤ 1.51 psi |
| ￭ | The above must be present for a period of 128 instances/cycles or greater to trigger DTC P1842 |
|
Step |
Action |
Value (s) |
YES |
NO |
|
1 |
- Key on, Engine running - Within VCM Live, open the Trans Pressure Sensor DTC Minimum parameter, does the Trans pressure sensor parameter display 1.51 psi or less? |
≤ 1.51 psi |
Go to Step 2 |
Intermittent Issue (Refer to Intermittent Diagnostics) |
|
2 |
- Disconnect the trans line pressure sensor connector and the sub harness connector - With a DVOM check for continuity between the trans pressure control solenoid valve pin 3 & cavity "C" |
|
Go to Step 3 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
3 |
- Disconnect the trans line pressure sensor connector and the sub harness connector - With a DVOM check for continuity between the trans line pressure low reference pin 12 & cavity "D" |
|
Go to Step 4 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
4 |
- Inspect the Trans Line pressure Sensor connector and pins for corrosion, contamination or any physical damage. - Any issues found? |
|
Repair any issues found and retest. |
Go to Step 5 |
|
5 |
- Replace the Trans Pressure Sensor - Is the replacement complete? |
|
Go to Step 6 |
N/A |
|
6 |
- 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 44. Transmission Line Pressure Below Minimum Threshold Diagnostics Table
NOTE: Reference DTC P1843 - Transmission Line Pressure Above Maximum Threshold for sensor cavity location.
