P0205

Circuit Description

The PCM controls the fuel injectors by using an ignition feed driver and ground circuit within the PCM. The driver has the ability to detect an electrical malfunction in the ignition feed or ground circuit. If an electrical malfunction occurs in the fuel injector circuit for engine cylinder # 5, the ignition feed driver signals the PCM to set DTC P0205.

Conditions for Running the DTC

The engine is running.

Conditions for Setting the DTC

^ The PCM detects an electrical malfunction on the injector circuit for engine cylinder # 5.
^ The condition is present for at least 30 seconds.

Action Taken When the DTC Sets

^ The PCM will illuminate the MIL during the second consecutive trip in which the diagnostic test has been run and failed.
The PCM will store conditions which were present when the DTC set as Freeze Frame and Fail Records data.

Conditions for Clearing the MIL/DTC

^ The PCM will turn the MIL OFF during the third consecutive trip in which the diagnostic has been run and passed.
^ The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
^ The DTC can be cleared by using a scan tool.

Diagnostic Aids

The misfire history counter may be useful in determining which injector circuit is malfunctioning. If DTC P0300 was set, look at the Misfire History display for each cylinder. The largest value stored in the misfire history counters will indicate the location of the malfunctioning injector circuit or injector. Check for the following conditions:

^ Poor connection at the PCM or fuel injector.
Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection.
^ Damaged harness.
Inspect the wiring harness for damage. Reviewing the Fail Records vehicle mileage since the diagnostic test last failed may help determine how often the condition that caused the DTC to be set occurs. This may assist in diagnosing the condition.

Test Description

Number(s) below refer to the step number(s) on the Diagnostic Table.

4. Checks for malfunctioning fuel injector control circuit or ignition feed wiring.
9. Checks for a malfunction in the fuel injector ignition feed circuit.
10. Checks for a short to ground in the injector control circuit.
11. Checks for an open in the fuel injector control circuit.
18. This vehicle is equipped with a PCM which utilizes an Electrically Erasable Programmable Read Only Memory (EEPROM). When the PCM is being replaced, the new PCM must be programmed.