Brief Descriptions

The Diagnostic Trouble Codes (DTCs) available for the remaining components on the 2.0L engine are listed as follows. In many cases, these codes are carried over from the OBD I diagnostics. Each listing includes a brief explanation of the J 2012 code and its number, and is preceded by the flash code produced by the Malfunction Indicator Lamp (MIL) on the instrument panel.

Several tests are made on comprehensive components. Components are tested for electrical opens and shorts. Inputs are tested for rationality: Does the signal make sense when compared to other signals? Outputs are tested for functionality: Does the change in inputs make sense after an output actuation?

CAUTION: If the check engine/malfunction indicator lamp illuminates because of a malfunction of the PCM, transmission between the scan tool and the PCM can not occur. In this case, the diagnostic trouble code cannot be read.

NOTE: Unlike previous Chrysler products, the Neon and Talon's DTCs cannot self erase after 50 warm-up cycles. Also, the MIL will not extinguish after the key has been cycled. If the MIL illuminates, a DTC is stored. Once the MIL is on, the PCM requires that the EGR monitor, and 02 monitor be run or aborted, and the secondary air injection monitor must be run before the PCM can diagnose a previously malfunctioning component. The PCM also requires that this occur three times before the MIL is extinguished. Once the MIL is extinguished, the DTC can be self-erased after 40 warm-up cycles.

DTC No. Items

01 (P0340) No cam signal at PCM
02 (P0605) Internal controller failure
17 (P0403) EGR solenoid circuit
18 (P0443) EVAP solenoid circuit
19 (P0203) Injector #3 control circuit
20 (P0202) Injector #2 control circuit
21 (P0201) Injector #1 control circuit
25 (P0505) Idle air control motor circuit
26 (P0122) Throttle position sensor voltage low
27 (P0123) Throttle position sensor voltage high
30 (P0117) Engine coolant temperature voltage too low
31 (P0118) Engine coolant temperature voltage too high
32 (PO134) Upstream HO2S stays at center
35 (P0500) No vehicle speed sensor signal
36 (P0107) MAP sensor voltage too low
37 (P0108) MAP sensor voltage too high
39 (P1297) No change in MAP from start to run
42 (P0352) Ignition coil No.2 primary circuit
43 (P0351) Ignition coil No.1 primary circuit
46 (P0401) EGR system failure
57 (P0112) Intake air temperature sensor voltage low
58 (P0113) Intake air temperature sensor voltage high
61 (P0204) Injector #4 control circuit
62 (P0132) Upstream HO2S shorted to voltage
68 (P0605) PCM failure SPI communications
71 (-) Battery temperature volts out of limit
92 (P1490) Low speed fan control relay circuit
93 (P1489) High speed fan control relay circuit
101 (P0220) Fuel pump relay control circuit
102 (P0133) Upstream HO2S response
103 (P0135) Upstream HO2S heater failure
104 (P0139) Downstream HO2S stays at center
105 (P0141) Downstream HO2S heater failure
136 (P1295) No 5 volts to throttle position sensor
137 (P0700) EATX controller DTC present
138 (P1294) Target idle not reached (+/- 200 r/min)
139 (P1487) High speed radiator fan control relay
146 (P1496) 5 volts supply output too low
153 (P1493) Battery temperature sensor voltage too low
154 (P1492) Battery temperature sensor voltage too high
155 (P0131) Upstream HO2S voltage grounded
156 (P0137) Downstream HO2S voltage grounded
157 (P1391) Intermittent loss of CMP or CKP
160 (P0442) EVAP leak monitor small leak detected
161 (P0455) EVAP leak monitor large leak detected
183 (P1495) Evaporative emission ventilation solenoid circuit
184 (P1494) Evaporative emission ventilation solenoid switch or mechanical fault
187 (P1486) EVAP leak monitor pinched hose found


NOTES:

1. After the powertrain control module (PCM) detects a malfunction, the check engine/malfunction indicator lamp illuminates when the engine is next turned ON and the same malfunction is detected. However, for items marked with an asterisk, the check engine/malfunction indicator lamp illuminates on the first detection of the malfunction.
2. After the check engine/malfunction indicator lamp illuminates, it will be switched OFF under the following conditions:
- When the PCM monitored the malfunction 3 times and detected no malfunction. In this case, one time indicates from engine start to stop.
- For misfiring or fuel trim malfunction, when driving conditions (engine speed, engine coolant temperature, etc) are similar to those when the malfunction was first recorded. In addition, the PCM has detected no malfunction.