TITANG9

(SEDAN G35 2003 A/T- 131,000 miles)

Incident: A couple days ago I was testing the car on the high way. Cruising at 45mph I fully depressed the accel pedal and 2 seconds later the car lost power and the VDC OFF, SLIP and SES lights turned on.

Symptoms: Now the car wont pass 2000 rpms and there is strong fuel smell when the engine is running. (OFF NOTE: The car was running in perfect condition before the incident, no instrument lights indications, nothing)

The codes as the show up in descending order(AutoZone scan):

P1122
P0102
P0223
P1224
P0221


Any ideas?

NISMO_558

iTrader: (1)

Describe how you were "testing" the car? BTW, sounds like it's in limp mode.

btw, there's a sticky thread at the top of the page that tells you all the error codes

P1122: Electronic Throttle Control Actuator
P0102: MAF Sensor
P0223: Throttle Position Sensor
P1224: Throttle Position Sensor 2
P0221: Throttle Position Sensor

cdoxp800

iTrader: (12)

You could just Reset the ECU:

https://my350z.com/forum/attachments...procedures.doc


Code Meanings.

P1122 =
Trouble diagnosis name: Electric throttle control performance problem

Component Description

Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc.

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.

The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC detecting condition:

* Electric throttle control function does not operate properly.

Possible cause:

* Harness or connectors (Throttle control motor circuit is open or shorted)
* Electric throttle control actuator


P0102 =
Trouble diagnosis name: Mass air flow (MAF) sensor circuit low input

Component Description

The mass air flow sensor is placed in the stream of intake air. It measures the intake flow rate by measuring a part of the entire intake flow. It consists of a hot film that is supplied with electric current from the ECM. The temperature of the hot film is controlled by the ECM acertain amount. The heat generated by the hot film is reduced as the intake air flows around it. The more air, the greater the heat loss. Therefore, the ECM must supply more electric current to maintain the temperature of the hot film as air flow increases. The ECM detects the air flow by means of this current change.

DTC detecting condition:

*

An excessively low voltage from the sensor is sent to ECM.

Possible cause:

*

Harness or connectors (The sensor circuit is open or shorted.)
*

Intake air leaks
* Mass air flow sensor may be faulty



P0223
Trouble diagnosis name: Throttle position sensor 1 circuit high input

Component Description

Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC detecting condition:

* An excessively high voltage from the TP sensor 1 is sent to ECM.

Possible cause:

* Harness or connector (The TP sensor 1 circuit is open or shorted.)
* Electric throttle control actuator (TP sensor 1) may be faulty


P1224
Trouble diagnosis name: Throttle position sensor 2 circuit high input

Component Description

Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC detecting condition:

* An excessively high voltage from the TP sensor 2 is sent to ECM.

Possible cause:

* Harness or connectors (The TP sensor 2 circuit is open or shorted.)
* Electric throttle control actuator (TP sensor 2)



P0221
Trouble diagnosis name: Throttle position sensor circuit range/performance problem

Component Description

Electric Throttle Control Actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

DTC detecting condition:

* Rationally incorrect voltage is sent to ECM compared with the signals from TP sensor 1 and TP sensor 2.

Possible cause:

* Harness or connector (The TP sensor 1 and 2 circuit is open or shorted.)
* Electric throttle control actuator (TP sensor 1 and 2) may be faulty

TITANG9

Two years later.... Mass Air Flow Sensor was the culprit.

djamps

iTrader: (1)

Sometimes when you have a bunch of codes at once there's a grounding issue. Typically the two on the front timing cover.

JaE35z

iTrader: (11)

Nice lol