Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Reference Value Parameter Identification (PID)/Measured Signal Chart
The following listing reflects PIDS and/or measured values which may reveal a possible concern within each system shown. Match the category number with the related PID/measured signal and go to the Reference Value Symptom Chart .
| Category Number | Related PIDS/Measured Signals |
|---|---|
| 5-10-17 | ACP |
| 1-23 | APP1 |
| 1-23 | APP2 |
| 23 | BOO1/BOO2 |
| 18-19 | CHT |
| 1-2-3-5-6-7-11-12-13-14-15-16-17-20-21 | CKP |
| 1-2-3-5-6-7-11-12-13-14-15-16-17-20-21 | CMP |
| 10 | CPP/PNP |
| 3-5-6-7-9-11-15-16-20-21 | DPFEGR |
| 4-18-19-21-22 | ECT |
| 3-5-6-7-9-11-15-16-20-21 | EGRMC1-4 |
| 3-5-6-7-9-11-15-16-20-21 | EGRMDSD |
| 3-5-6-7-9-11-15-16-20-21 | EGRVR |
| 5-18-19-20-21 | EOT |
| 3-5-6-11-21 | EVAPCV |
| 3-5-6-11-21 | EVMV |
| 20 | FLI |
| 1 thru 21 | FP |
| 1 thru 21 | FPM |
| 1 thru 21 | FRP |
| 1 thru 21 | FRT |
| 5 | FTP |
| 1 thru 21 | FUELPW1/2 |
| 1 thru 21 | FUELSYS (OL/CLSD-LP) |
| 19 | HFC |
| 1 thru 21 | HTR11/12/21/22 |
| 2-3-5-7-8-10-22 | IAT |
| 2-3-5-7-8-10-22 | IAT2 |
| 5-14-15-16-17-20 | IMTV |
| 4-5-16-18-19-20-21 | KS |
| 19 | LFC |
| 1 thru 21 | LONGFT1/2 |
| 1 thru 23 | MAF |
| 1 thru 23 | MAP |
| 1 thru 22 | MISF |
| 1 thru 21 | O2S11/12/21/22 |
| 22 | OSS |
| 10 | PSP |
| 5 | PTO |
| 1 thru 23 | RPM |
| 5-14-16-17 | SCICP |
| 1 thru 21 | SHRTFT1/2/11/12/21/22 |
| 15-16-18-19-20-21 | SPARKADV a |
| 1-23 | TP |
| 2-4-5-9-10-11-16-17-18-19-20-21 | VCT |
| 2-4-5-9-10-11-16-17-18-19-20-21 | VCTDC/VCTDC2 |
| 1-2-3-5-6-11-12-13-14 | VPWR |
Some signals can only be measured and require the use of a digital multimeter (DMM).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.