DTC P0228 - Throttle Position 1 Sensor Circuit High
Conditions for setting dtc P0228
| ￭ | Engine Running |
| ￭ | Manifold Absolute Pressure Sensor ≥ 4.9 volts |
| ￭ | The above must be present for a period of 128 instances/cycles or greater to trigger DTC P0228 |
|
Step |
Action |
Values (s) |
YES |
NO |
|
1 |
- Key ON, Engine OFF - Within VCM Live, open the TPS 1 sensor DTC Maximum parameter, does the TPS sensor parameter display 4.9 volts or greater? |
≥ 4.9 volts |
Go to Step 3 |
Go to Step 2 |
|
2 |
- Slowly depress the foot pedal while observing the TPS voltage parameter within VCM Live - Does the TPS voltage ever exceed 4.8 volts? |
|
Go to Step 3 |
Intermittent Issue (Refer to Intermittent Diagnostics) |
|
3 |
- Key OFF - Disconnect the TPS connector - Key ON - Does the TPS voltage parameter within VCM Live display a voltage of 0.2 volts or less? |
|
Go to Step 6 |
Go to Step 4 |
|
4 |
- Key OFF - Disconnect the ECU wire harness connector "C" - Key ON - Using a DVOM check for voltage between the ECU TPS ECU connector "C" pin 25 and engine ground - Do you have voltage? |
|
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
Go to Step 5 |
|
5 |
- Replace ECU - Is the replacement complete? |
|
Go to Step 10 |
N/A |
|
6 |
- Back probe the sensor ground circuit at the ECU side of the wire harness ground C29-2 with a test light connected to battery voltage - Does the light come on? |
|
Go to Step 7 |
Go to Step 9 |
|
7 |
- Inspect the TPS connector terminals for corrosion, physcial damage, and contamination - Any issues found? |
|
Repair the circuit as necessary and fix any pins with corrosion or contamination |
Go to Step 8 |
|
8 |
- Replace the TPS - Is the replacement complete? |
|
Go to Step 10 |
N/A |
|
9 |
- Key OFF - Disconnect the ECU connector "C" - Using a DVOM check for continuity between the TPS connector ground cavity 2 & the ECU connector "C" pin SP3 - Do you have continuity between them? |
|
Go to Step 5 |
Repair the circuit as necessary, locate any wires that need to be repaired or replaced |
|
10 |
- 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 18. Throttle Position 1 Sensor Circuit High Diagnostics Table
Figure 7. TPS Cavity Connector Location
