Question about 2006 Nissan Xterra

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Ecm circuit backup

My car does not accelerate beyond 40m\hr, it obviously does not rev high at all, it over heats, fuel guage has been inaccurate and unreliable and when it was scanned, the summary was po604 ecm backup circuit and po463 fuel level sen circ

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 8 Answers

SOURCE: engine surges when accelerating in neutral/fuel guage inaccurate

you have two different problems. first your gauge may have a bad ground or bad sending unit . try fuel injector cleaner as they may be gloged for hesitation .

Posted on Mar 11, 2009

  • 662 Answers

SOURCE: 1989 holden astra slx 1.8l

The ecm light comes on for a reason, and it is hard to work out the problem, until you find out what codes the computer is registering....i would suggest that you take vehicle to a local mechanic and get him to read the codes....that would give you and us an easier way to find out whats happening.......

Posted on Aug 28, 2010

  • 237 Answers

SOURCE: i ve nissan pathfinder 2005

failure rate of these sensors is very high .nissan extended the warranty period on these rather than issuing a local dealer replacement would almost certainly be under for no start there is currently a campaign to replace ecm relays for this issue but since obviously your fuel gauge isnt accurate you may just be out of gas.

Posted on Jan 30, 2011

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SOURCE: 2005 nisszn exterra where is the fuel level sensor circuit high input located?

inside the fuel tank attached to the fuel pump housing

Posted on Jun 11, 2012

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SOURCE: my accelerator doesnt respond when i step on it. the speedometer too doesnt go beyond 40km/hr. help me

You must have the systems control module scanned for fault codes to begin the process of repairing this, this take special equipment and a trained technician.

Posted on Jun 13, 2012

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driving in over drive mode actually is what gives the economy as the engine rpms will be around 300 less than direct drive . Lower rpms = fuel savings
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2007 chevy tahoe loses power

No messaage of reduced engine power ? Your vehicle has electronic throttle control . Has four position sensors , two are located in the gas pedal ,an two in the throttle body . The PCM uses these sensor to know how much to open the throttle plate ,allowing more air into the engine . How did you read this code an where did you read it's definition at ? This is not a code for your vehicle . Some time cheap code readers get them wrong .
DTC P2120: Accelerator Pedal Position (APP) Sensor 1 Circuit
DTC P2122: Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage
DTC P2123: Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage
DTC P2125: Accelerator Pedal Position (APP) Sensor 2 Circuit
DTC P2127: Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage
DTC P2128: Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage
DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
DTC P2101: Throttle Actuator Position Performance
DTC P2119: Throttle Closed Position Performance
DTC P2176: Minimum Throttle Position Not Learned

If one of this position sensors is bad it will throw the PCM into a
Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.

017 Accelerator Pedal Position Sensors
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