DTC P0511 - Idle Air Control Circuit Failure🔗
Conditions for Setting DTC P0511🔗
- Engine Running
- Idle Air Control ≤ 0.1 volts or detects an open circuit
- The above must be present for a period of 128 instances/cycles or greater to trigger DTC P0511
Diagnostic Steps🔗
| Step | Action | Value (s) | YES | NO |
|---|---|---|---|---|
| 1 | - Key on, Engine running - Within VCM Live, open the IAC sensor DTC parameter, does the IAC sensor parameter display 0.1 volts or less? |
Go to Step 2 | Intermittent Issue — Refer to Intermittent Diagnostics | |
| 2 | - Key OFF - Disconnect the IAC sensor connector & the IAC ECU connector "A" - Using a DVOM check for continuity between the IAC sensor connector cavity "A" & the ECU connector "A" pin 16 - Do you have continuity between them? |
Go to Step 3 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 3 | - Key OFF - Disconnect the IAC sensor connector & the IAC ECU connector "A" - Using a DVOM check for continuity between the IAC sensor connector cavity "B" & the ECU connector "A" pin 33 - Do you have continuity between them? |
Go to Step 4 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 4 | - Key OFF - Disconnect the IAC sensor connector & the IAC ECU connector "A" - Using a DVOM check for continuity between the IAC sensor connector cavity "C" & the ECU connector "A" pin 11 - 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 | |
| 5 | - Key OFF - Disconnect the IAC sensor connector & the IAC ECU connector "A" - Using a DVOM check for continuity between the IAC sensor connector cavity "D" & the ECU connector "A" pin 27 - Do you have continuity between them? |
Go to Step 6 | Repair the circuit as necessary, locate any wires that need to be repaired or replaced | |
| 6 | - Key OFF - Inspect IAC connector and pins for corrosion, contamination or any physical damage. - Any issues found? |
Repair the circuit as necessary and repair any pins with any corrosion, contamination or physical damage | Go to Step 7 | |
| 7 | - Replace the IAC 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 stored codes - Does the engine operate without any stored DTCs? |
System is now operational and ready to be tuned | Contact HP Tuners Support |
Note
If the engine does not operate without stored DTCs after completing all steps, contact HP Tuners Support for further assistance.