Typical Diagnostic Reference Values
NOTE:
Footnotes are referenced throughout the Typical Diagnostic Reference Value Charts. A letter in parentheses next to a value indicates supplemental information is available.
An attempt is made to provide as much information as possible. Some vehicles may not display all input and output signals.
The Typical Diagnostic Reference Value Charts do not display fault parameter identifications (PIDs). These are PIDs which indicate a hard fault with the circuit. They display a value of FAULT or NO FAULT and are PIDs ending with the letter F.
Reference values may vary 20% depending on operating conditions, altitude, and other factors. The RPM values are axle and tire dependent.
Values are taken at an altitude of approximately 189 meters (620 ft) above sea level with the engine at normal operating temperature and accessories off.
For detailed transmission diagnostics, refer the appropriate service information. Transmission signals may be referred to in either alpha or numeric form. For example, 1=A, 2=B, 3=C.
- Value is not useful under this condition.
- Value depends on fuel tank level. Typical operating range is 15% (empty) to 90% (full).
- Heated oxygen sensors (HO2S) should switch from rich to lean at least once every 3 seconds. HO2S voltage should toggle above and below 0.450 DCV and never be a negative value. Valid HO2S switching occurs only during closed loop fuel control operation.
- Downstream oxygen sensors stay close to a constant voltage when the catalyst monitor is off (positive value only). When the catalyst monitor is on, the HO2S switches from rich to lean above and below 0.450 DCV and should never be a negative value. For downstream oxygen sensors (12, 22) greater activity results when the catalyst monitor is active.
- The normal operation value is from -1.5 to 3.5 degrees.
| PID | Units Measured/PID | Component/PID Only | Measured/PID Values | |||
|---|---|---|---|---|---|---|
| KOEO | Hot Idle | 48KM/H (30 MPH) | 89 KM/H (55 MPH) | |||
| PCMAAT (Deg C) | DEG C (DEG F) | AAT Sensor | 1 (33.8) | 1 (33.8) | 1 (33.8) | 1 (33.8) |
| PCMAAT_V (V) | VOLTS | AAT Sensor | 3.78 | 3.78 | 3.85 | 3.88 |
| PCMAC_REQUEST | YES/NO | PID | NO | NO | NO | NO |
| PCMAPP (%) | % | APP Sensor | 0 | 0 | 10 | 14 |
| PCMAPP1 (V) | VOLTS | APP Sensor | 0.81 | 0.81 | 1.12 | 1.25 |
| PCMAPP1_[APP_D] (%) | % | APP Sensor | 16 | 16 | 22 | 25 |
| PCMAPP2 (V) | VOLTS | APP Sensor | 0.41 | 0.41 | 0.57 | 0.63 |
| PCMAPP2_[APP_E] (%) | % | APP Sensor | 8 | 8 | 11 | 13 |
| PCMAPP_MAXDIFF (Deg) | DEG | PID | 0.00 | 0.00 | 0.00 | 0.00 |
| PCMBARO (kPa) | kPa (PSI) | PID | 99 (14.36) | 99 (14.36) | 99 (14.36) | 99 (14.36) |
| PCMBARO_V (V) | VOLTS | PID | 3.87 | 3.87 | 3.87 | 3.86 |
| PCMBATT_V_INF (V) | VOLTS | PID | 12.65 | 14.96 | 14.96 | 14.96 |
| PCMBOOSTP_EVAL | YES/NO | PID | YES | YES | YES | YES |
| PCMBRKOVRD_POSS | NUMERIC VALUE | PID | 9 | 9 | 9 | 9 |
| PCMBRKOVR_ACTION | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCMCAC_T (Deg C) | DEG C (DEG F) | CACT Sensor | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| PCMCAM_SYNC | YES/NO | PID | NO | YES | NO | NO |
| PCMCATTEMP11 (Deg C) | DEG C (DEG F) | CAT11 Sensor | 536 (996.8) | 548 (1, 018.4) | 579 (1, 074.2) | 673 (1, 243.4) |
| PCMCHT (Deg C) | DEG C (DEG F) | CHT Sensor | 82 (179.6) | 85 (185) | 85 (185) | 87 (188.6) |
| PCMCHT2 (Deg C) | DEG C (DEG F) | CHT2 Sensor | 100 (212) | 97 (206.6) | 101 (213.8) | 106 (222.8) |
| PCMCHT2_V (V) | VOLTS | CHT2 Sensor | 3.41 | 3.50 | 3.36 | 3.19 |
| PCMCLRDIST (km) | KM (MILES) | PID | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 2.0 (1.24) |
| PCMCYL1_ACCL | NUMERIC VALUE | PID | (I) | -1 TO +1 | -1 TO +1 | -1 TO +1 |
| PCMCYL2_ACCL | NUMERIC VALUE | PID | (I) | -1 TO +1 | -1 TO +1 | -1 TO +1 |
| PCMCYL3_ACCL | NUMERIC VALUE | PID | (I) | -1 TO +1 | -1 TO +1 | -1 TO +1 |
| PCMCYL4_ACCL | NUMERIC VALUE | PID | (I) | -1 TO +1 | -1 TO +1 | -1 TO +1 |
| PCMDECHOKE | YES/NO | PID | YES | NO | NO | NO |
| PCMDIST_AEIS (km) | KM (MILES) | PID | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) | 0.0 (0.0) |
| PCMDIST_BRKOVRD (km) | KM (MILES) | PID | 9.5 (5.90) | 9.5 (5.90) | 10.0 (6.21) | 11.5 (7.15) |
| PCMDPFE_PRES (kPa) | kPa (PSI) | Differential Pressure Feedback EGR Sensor | -0.14 (-0.02) | -0.39 (-0.06) | -0.14 (-0.02) | 3.88 (0.56) |
| PCMDPFE_V (V) | VOLTS | Differential Pressure Feedback EGR Sensor | 1.49 | 1.48 | 1.49 | 1.61 |
| PCMDTCCNT | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCMDTCCNT_OBD | NUMERIC VALUE | PID | 0 | 0 | 0 | 0 |
| PCMEBP (kPa) | kPa (PSI) | EBP Sensor | 100.14 (14.52) | 99.42 (14.42) | 102.33 (14.84) | 101.69 (14.75) |
| PCMEBP_V (V) | VOLTS | EBP Sensor | 0.98 | 1.06 | 0.95 | 0.93 |
| PCMECT (Deg C) | DEG C (DEG F) | ECT Sensor | 71 (159.8) | 70 (158) | 79 (174.2) | 86 (186.8) |
| PCMECT1_V (V) | VOLTS | ECT Sensor | 0.98 | 1.00 | 0.78 | 0.64 |
| PCMEGRT_B (Deg C) | DEG C (DEG F) | EGRT12 Sensor | -19 (-2.2) | -19 (-2.2) | -13 (8.6) | -8 (17.6) |
| PCMEGRT_B_V (V) | VOLTS | EGRT12 Sensor | 0.91 | 0.92 | 0.44 | 0.28 |
| PCMEGRVP (V) | VOLTS | EGR Valve | 0.91 | 0.91 | 1.13 | 1.20 |
| PCMEGRVPDES (%) | % | PID | 0 | 0 | 49 | 49 |
| PCMEGR_A_ACT (%) | % | EGR Valve | 0 | 0 | 7 | 10 |
| PCMEGR_A_CMD (%) | % | PID | 0 | 0 | 7 | 10 |
| PCMEQ_RAT11 | RATIO | PID | 0.00 | 1.02 | 1.03 | 1.08 |
| PCMETC_ACT (Deg) | DEG | PID | 12.49 | 3.47 | 9.79 | 11.37 |
| PCMETC_TRIM (Deg) | DEG | PID | 0.14 (E) | 0.15 (E) | 0.16 (E) | 0.16 (E) |
| PCMETC_[TAC_PCT] (%) | % | PID | 9 | 4 | 11 | 13 |
| PCMEVAP020C | YES/NO | PID | NO | NO | NO | NO |
| PCMEVAPCP (%) | % | EVAPCP Valve | 0 | 6 | 50 | 13 |
| PCMEVAPCV (%) | % | CANV Valve | 0 | 0 | 0 | 0 |
| PCMEVAPPCT (%) | % | PID | 0 | 6 | 50 | 13 |
| PCMEVAPSOAK | YES/NO | PID | NO | NO | NO | NO |
| PCMEVAPSTA | STATUS | PID | NOT RUNNING | NOT RUNNING | NOT RUNNING | NOT RUNNING |
| PCMEVBV (% Duty Cycle) | % | EVAP Vapor Blocking Valve | 0 | 0 | 100 | 100 |
| PCMFAN_DSD (%) | % | PID | 8 | 8 | 8 | 8 |
| PCMFLI (%) | % | Fuel Level Sensor | 44 (B) | 45 (B) | 46 (B) | 44 (B) |
| PCMFLP (kPa) | kPa (PSI) | Fuel Pressure Sensor | 612 (88.76) | 547 (79.34) | 546 (79.19) | 548 (79.48) |
| PCMFLP_DSD (kPa) | kPa (PSI) | Fuel Pressure Sensor | 546 (79.19) | 546 (79.19) | 546 (79.19) | 546 (79.19) |
| PCMFLP_V (V) | VOLTS | Fuel Pressure Sensor | 3.97 | 3.57 | 3.57 | 3.58 |
| PCMFP (%) | % | Fuel Pump Control Module | 75 | 26 | 26 | 26 |
| PCMFPM (%) | % | PID | 40 | 40 | 40 | 40 |
| PCMFRP (kPa) | MPa (PSI) | FRP Sensor | 7.11 (1, 031.22) | 4.93 (715.01) | 7.50 (1, 087.78) | 7.88 (1, 142.90) |
| PCMFRP_DSD (kPa) | MPa (PSI) | PID | 0.430 (62.37) | 4.96 (719.39) | 7.69 (1, 115.34) | 7.90 (1, 145.80) |
| PCMFRP_V (V) | VOLTS | FRP Sensor | 1.31 | 1.06 | 1.37 | 1.40 |
| PCMFRT_A_RAW (Deg C) | DEG C (DEG F) | FRPT Sensor | 16 (60.8) | 16 (60.8) | 16 (60.8) | 16 (60.8) |
| PCMFRT_V (V) | VOLTS | FRT Sensor | 0 | 0 | 0 | 0 |
| PCMFTP_V (V) | VOLTS | FTP Sensor | 2.63 | 2.47 | 2.39 | 2.45 |
| PCMFUELSYS_CL | YES/NO | PID | NO | YES | YES | YES |
| PCMFUELSYS_OL | YES/NO | PID | NO | NO | NO | NO |
| PCMHFC | ON/OFF | PID | OFF | OFF | OFF | OFF |
| PCMHTR11 | ON/OFF | HO2S11 Sensor | OFF | ON | ON | ON |
| PCMHTR12 | ON/OFF | HO2S12 Sensor | OFF | ON | ON | ON |
| PCMHTR21 | ON/OFF | HO2S21 Sensor | OFF | OFF | OFF | OFF |
| PCMHTR22 | ON/OFF | HO2S22 Sensor | OFF | OFF | OFF | OFF |
| PCMHTRCM11 (Amp) | mA | HO2S11 Sensor | 0.00 | 0.00 | 0.00 | 0.00 |
| PCMHTRCM12 (Amp) | mA | HO2S12 Sensor | 0.00 | 0.00 | 0.00 | 0.00 |
| PCMIAT (Deg C) | DEG C (DEG F) | IAT Sensor | 37 (98.6) | 26 (78.8) | 24 (75.2) | 20 (68) |
| PCMIAT11 (Deg C) | DEG C (DEG F) | IAT Sensor | 37 (98.6) | 26 (78.8) | 23 (73.4) | 20 (68) |
| PCMIAT12 (Deg C) | DEG C (DEG F) | IAT2 Sensor | 33 (91.4) | 30 (86) | 26 (78.8) | 14 (57.2) |
| PCMIAT1_V (V) | VOLTS | IAT Sensor | 1.89 | 2.39 | 2.50 | 2.68 |
| PCMIAT2 (Deg C) | DEG C (DEG F) | IAT2 Sensor | 33(91.4) | 30 (86) | 26 (78.8) | 24 (75.2) |
| PCMIAT2_V (V) | VOLTS | IAT2 Sensor | 2.06 | 2.17 | 2.39 | 2.45 |
| PCMINJ1_F | YES/NO | PID | NO | NO | NO | NO |
| PCMINJ2_F | YES/NO | PID | NO | NO | NO | NO |
| PCMINJ3_F | YES/NO | PID | NO | NO | NO | NO |
| PCMINJ4_F | YES/NO | PID | NO | NO | NO | NO |
| PCMINJECTOR_OFF | -----/DISABLE | Injector 1-4 | ----- | ----- | ----- | ----- |
| PCMKNK_CNTR_CYL1 | COUNT | PID | 0 | 0 | 0 | 0 |
| PCMKNK_CNTR_CYL2 | COUNT | PID | 0 | 0 | 0 | 0 |
| PCMKNK_CNTR_CYL3 | COUNT | PID | 0 | 0 | 0 | 0 |
| PCMKNK_CNTR_CYL4 | COUNT | PID | 0 | 0 | 0 | 0 |
| PCMKNOCK_1 | COUNT | KS11 Sensor | 999 | 81 | 69 | 89 |
| PCMKNOCK_2 | COUNT | KS12 Sensor | 999 | 85 | 82 | 100 |
| PCMLOAD (%) | % | PID | 0.00 (A) | 41 | 40 | 29 |
| PCMLOAD_ABSL (%) | % | PID | 0.00(A) | 23 | 36 | 43 |
| PCMLONGFT1 (%) | % | PID | (A) | -20 TO +20 | -20 TO +20 | -20 TO +20 |
| PCMMAP (kPa) | kPa (PSI) | MAP Sensor | 99.00 () | 38.50 () | 68.00 () | 71.00 () |
| PCMMAP_V (V) | VOLTS | MAP Sensor | 1.52 | 0, 59 | 1.04 | 1.14 |
| PCMMIL_DIS (km) | KM (MILES) | PID | 0 (0) | 0 (0) | 0 (0) | 0 (0) |
| PCMMIL_OBD | ON/OFF | PID | OFF | OFF | OFF | OFF |
| PCMMISFIRE | TRUE/FALSE | PID | FALSE | FALSE | FALSE | FALSE |
| PCMMP_LRN | TRUE/FALSE | PID | TRUE | TRUE | TRUE | TRUE |
| PCMNUM_MISFIRE | COUNT | PID | 0 | 0 | 0 | 0 |
| PCMO2S11_CUR (mA) | mA/uA | HO2S11 Sensor | (A) | switching (C) | switching (C) | switching (C) |
| PCMO2S11_HTR (%) | % | HO2S11 Sensor | 20 | 24 | 25 | 24 |
| PCMO2S11_IMPED (V) | VOLTS | HO2S11 Sensor | 5.00 | 0.17 | 0.17 | 0.17 |
| PCMO2S11_READY | YES/NO | HO2S11 Sensor | NO | YES | YES | YES |
| PCMO2S12 (V) | VOLTS | HO2S12 Sensor | (A) | switching (D) | switching (D) | switching (D) |
| PCMO2S21_READY | TRUE/FALSE | HO2S21 Sensor | NO | YES | YES | YES |
| PCMO2_DS_DISBL | TRUE/FALSE | PID | TRUE | FALSE | FALSE | FALSE |
| PCMOCTADJ_R_LRND | % | PID | 0 | 0 | 0 | 0 |
| PCMPATSENABL | ENABLED / DISABLED | PID | ENABLED | ENABLED | ENABLED | ENABLED |
| PCMRO2FT1 (%) | % | PID | 0.00 | 0.00 | -0.01 | 0.03 |
| PCMRPM (Rpm) | RPM | CKP Sensor | 0 | 751 | 1954 | 1839 |
| PCMRPM_DSD (Rpm) | RPM | PID | 750 | 750 | 750 | 750 |
| PCMSHRTFT1 (%) | % | PID | (I) | -10 TO +10 | -10 TO +10 | -10 TO +10 |
| PCMSPARKADV (Deg) | DEG | PID | 10.00 | 9.00 | 19.00 | 13.5 |
| PCMSYNC | YES/NO | PID | NO | YES | YES | YES |
| PCMTCBP (kPa) | kPa (PSI) | TCBP Sensor | 96.7() | 96.9() | 97.8 () | 113.6() |
| PCMTCBP_V (V) | VOLTS | TCBP Sensor | 1.42 | 1.42 | 1.43 | 1.65 |
| PCMTP1_LRN_TRIM (Deg) | DEG | ETBTPS | 6.13 | 6.13 | 6.13 | 6.13 |
| PCMTP1_PER (%) | % | ETBTPS | 18 | 9 | 14 | 27 |
| PCMTP2_LRN_TRIM (Deg) | DEG | ETBTPS | 0.00 | 0.00 | 0.00 | 0.00 |
| PCMTP_REL (%) | VOLTS | PID | 12 | 3 | 7 | 20 |
| PCMTURBO_BP1_STAT | FAULT/NO FAULT | TCBY Valve | NO FAULT | NO FAULT | NO FAULT | NO FAULT |
| PCMTURBO_BPASS (%) | % | TCBY Valve | 0 | 0 | 0 | 0 |
| PCMTURBO_WGATE (%) | % | Turbocharger Wastegate Control | 0 | 0 | 0 | 0 |
| PCMVCTSYS | ENABLED / DISABLED | PID | DISABLED | ENABLED | ENABLED | ENABLED |
| PCMVCT_EXH_ACT1 (Deg) | DEG | PID | 0.00 | -0.25 | 30.31 | 19.94 |
| PCMVCT_EXH_DC1 (%) | % | VCT12 Solenoid | 0 | 0 | 41 | 35 |
| PCMVCT_EXH_DIF1 (Deg) | DEG | PID | 0.00 | 0.25 | 3.75 | 0.00 |
| PCMVCT_INT_ACT1 (Deg) | DEG | PID | 0.00 | 0.25 | -11.19 | -34.38 |
| PCMVCT_INT_DC1 (%) | % | VCT11 Solenoid | 0 | 0 | 32 | 39 |
| PCMVCT_INT_DIF1 (Deg) | DEG | PID | 0.00 | -0.25 | 3.44 | -0.38 |
| PCMVPWR (V) | VOLTS | PID | VBAT | VBAT | VBAT | VBAT |
| PCMVREF (V) | VOLTS | PID | 5 | 5 | 5 | 5 |
| PCMVSS (Kph) | km/h (MPH) | PID | 0 (0) | 0 (0) | 48 km/h (30 MPH) | 89 km/h (55 MPH) |
| PCMWGATE_A_POS_PCT (% Open) | % | Turbocharger Wastegate Motor 1 | 32.76 | 0.00 | 43.20 | 95.82 |
| PCMWGATE_A_V (V) | VOLTS | Wastegate Position Sensor 1 | 2.45 | 1.58 | 2.70 | 4.09 |