Question about 1995 Cadillac DeVille

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Check engine light on

These are the codes which came up on onboard computer. p030, i032, i039

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  • Anonymous Mar 16, 2014




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P030 is o2 sensor

Posted on Jan 17, 2009


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2011 Dodge Caliber, turns over, but won't start. Check engine & red lightening bolt lights are on. Changed plugs. Didn't help. Car has 75 on it, and gas tank is full. Any ideas?

Have the onboard computer checked and extract the code(s) that set the check engine light. There are a number of things that can cause your problem and the code(s) may help narrow it down. Possible items are the crankshaft sensor, the camshaft sensor, and the fuel pump, as well as the onboard computer itself.

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Trouble code P030

The code should be for a failed heater in the O2 sensor bank one. Bank one would be on the side with cylinder one.
There may be an O2 sensor in each exhaust pipe and the computer says the heater in one of them is not working.
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Code #P030

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Sensor 1 bank 1 sensor 1 P030 code from check engine light

I have an error P0430 on my '2005 Nissan Armada, how can I fix this without having to pay my mechanic approximately $1K for repairs on the catalytic converter?

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89 ford ranger check engine light blinks when I go above 55mph. Is there a common problem with these trucks that I can diagnose myself?

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My 94 cadillac deville 4.9L stalls and the engine shut down including all electrical while running. The engine starts with no problem after turning the ignition off after stalling. The battery, fuel filter...

I039 is a road sensing suspension problem, I042 is battery voltage too high. I would first try to clear the codes and try to figure out why the voltage is too high - often a faulty regulator in the generator.
You also seem to have a battery drain problem - something besides the keep-alive circuit is drawing it down. First check all lights (including trunk and under hood) and the rear air compressor when the car is turned off.
Road sensing problem could because of the high voltage, but could also be one of the height sensors at each wheel is detached or broken, or the RSS module has given up the ghost.

Sep 04, 2017 | 1994 Cadillac DeVille

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No fire to one of the coils which supplies 2 plugs engine light on and running on 4 of 6 cly.

Several possibilities. Internal coil failure, wiring or connection problem, computer is not functioning properly to energize the coil pack. Which two cylinders? I gather the Check Engine light scan reveals misfire codes (DTC) P030? and P030?
Check out the wiring diagram:
dde5042.jpg 78bd4d6.jpg Problem could be here or at the ECM connection. If not, then the coil pack has gone bad.

May 11, 2009 | 2001 Hyundai Santa Fe

1 Answer

Battery No Charge and Error codes

These are for 4.9L

P016-generator voltage out of range--Voltage is below 10 volts or above 16 volts with engine at 500rpm.

P030-Idle speed control (ISC) out of range--Check ISC for operation

A047-very low A/C refrigerant condition warning--check refrigerant level

I039-speed sensing suspension (SSS) fault--this one requires a lot of testing. Could be anything from bad connection at a strut, to bad ground, to bad strut.

I041-battery voltage too low--at 800 rpm, voltage is less than 10.6 volts

I052-keep alive memory error--means IPC lost voltage, and reset. Normal if battery was disconnected, or lost voltage.

These codes are for 4.6L

I039-loss of road sensing suspension (RSS) data--might need to replace rss module

P016-generator voltage out of range--same as above.

If you need anything else, let me know.

Dec 19, 2008 | 1994 Cadillac DeVille

1 Answer

2003 ford expedition missing very bad and won't get over 9 mph.

Check the fuel pressure to the fuel rail. if pressure is low, you may have a clog in the line. If the miss is from start up, start with checking your plugs, fouled and proper gap, and wires. If it does not do this until it warms up, could be an injector. check for codes, some times you will have a code in the computer and no check engine light on. P030* is a miss, the fourth digit tells you what cylinder.

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