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Possible problem with the alternator not putting out enough voltage. I had the same problem with my 2002 XC70, putting in a new alternator fixed it. I used a local mechanic who I found on the car talk web-site. Low Cost Volvo parts can be purchased at FCP Groton.
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not the pump but air in the system or a broken wire to the coolant level sensor
that sensor at the top of the radiator tank has to be completely immersed in coolant or the circuit is broken and the light comes on
same effect id the wire to that sensor is broken in the insulation
Hello! in 1995 stored trouble codes used the On Board Diagnostic I software (OBDI)..Scanners will not work...The control unit LED can indicate any number of simultaneous component conditions by blinking separate codes, one after another...An instrument panel mounted indicator lamp will light and stay lit. If the lamp is on, or if a system malfunction is suspected even though the lamp is off, it is necessary to inspect the electronic control unit LED display. The LED display is on the ECM (ECU), which is located just below the RH side of the instrument panel. The indicator lamps operate whenever the ignition is On and a DTC is stored in the ECM (ECU) memory. When an abnormality is detected the ECM (ECU) display blinks. The LED blinks a certain number of times, with the number of blinks indicating the number of the DTC. After the LED blinks a number of times there will be a two second pause and the LED will blink out the number of the next DTC..here are the codes..If there is a code send it to me...If there isn't a code I'll take it from there...guru.saailer
CODE DEFINITION 1 ..Oxygen Sensor "A" (Primary) defective circuit or unplugged / defective sensor
This is code 12 and it means "System Normal"
Here is the complete list of fault codes for your Buick
GM common codes for OBD1 (for vehicles made before 1995) 12 System normal 13 oxygen sensor circuit open 14 coolant sensor high resistance or shorted 15 coolant sensor circuit low or open 16 direct ignition system (DIS) fault in circuit 17 cam position sensor fault 18 crank or cam sensor error 19 crank sensor circuit fault 21 tps sensor out of range 22 tps sensor signal voltage low 23 intake air temp sensor out of range, low 24 vehicle speed (vss) sensor circuit fault 25 air temp sensor sensor out of range, high 26 quad-driver module (computer) circuit #1 fault 27 quad-driver module (computer) 2nd gear circuit 28 quad-driver module (computer) circuit #2 fault 29 quad driver module (computer) 4th gear circuit 31 cam position sensor fault 32 egr circuit fault 33 map sensor signal out of range, high 34 map sensor signal out of range, low 35 idle air control sensor circuit fault 36 ignition system circuit error 38 brake input circuit fault 39 clutch input circuit fault 41 cam sensor circuit fault, igntion control circuit fault 42 electronic spark timing (EST) circuit grounded 43 knock sensor or electronic spark control circuit fault 44 oxygen sensor lean exhaust 45 oxygen sensor rich exhaust 46 pass-key II circuit or ps.pressure switch circuit fault 47 pcm-bcm data circuit 48 misfire diagnosis 51 calibration error, mem-cal, ecm or eeprom failure 52 engine oil temperature circuit, low temperature indicated 53 battery voltage error or egr or pass-key II circuit 54 egr system failure or fuel pump circuit low voltage 55 a/d converter error or pcm not grounded or lean fuel or frounded reference voltage 56 quad-driver module #2 circuit 57 boost control problem 58 vehicle anti-theft system fuel enable circuit 61 a/c system performance or degraded oxygen sensor signal 62 engine oil temperature high temperature indicated 63 oxygen sensor right side circuit open or map sensor out of range 64 oxygen sensor right side lean exhaust indicated 65 oxygen sensor right side rich exhaust indicated 66 a/c pressure sensor circuit low pressure 67 a/c pressure sensor circuit or a/c clutch circuit failure 68 a/c compressor relay circuit failure 69 a/c clutch circuit head pressure high 70 a/c refrigerant pressure circuit high 71 a/c evaporator temperature sensor circuit low 72 gear selector switch circuit 73 a/c evaporator temperature circuit high 75 digital egr #1 solenoid error 76 digital egr #2 solenoid error 77 digital egr #3 solenoid error 79 vehicle speed sensor (vss) circuit signal high 80 vehicle speed sensor (vss) circuit signal low 81 brake input circuit fault 82 ignition control (IC) 3X signal error 85 prom error 86 analog/digital ecm error 87 eeprom error 99 power management
This is a code 46 LH Crash Sensor - Not Mounted to Vehicle Properly. Often there is a poor contact on one of the wiring connectors. Some of the problems can happen from a poor connection where everything connects under the drivers side seat.
Here is a list of codes for the airbag light issues.
Air Bag Fault Code Table
AIR BAG DIAGNOSTIC MONITOR FAULT CODE PRIORITY TABLE
Priority Code Component/Fault Description
Highest -- No Air Bag Lamp - Inoperative Lamp Circuit or No Ignition Voltage to Diagnostic Monitor
' -- Continuous Air Bag Lamp - Diagnostic Monitor Disconnected or Inoperative
' 12 Low Battery Voltage
' 13 Air Bag Circuit or Crash Sensor Circuit - Shorted to Ground
' 21 Safing Sensor - Not Mounted on Vehicle Properly
' 22 Safing Sensor Output Circuit - Shorted to Battery Voltage
' 23 Safing Sensor Input Feed/Return Circuit Open
' 24 Open in Circuit 944B or Low Resistance in Crash Sensor(s)
' 32 Driver Side Air Bag/Safing Sensor Circuit - High Resistance or Open
' 33 Pin 7 Not Grounded at Diagnostic Monitor
' 34 Driver Side Air Bag/Safing Sensor Circuit - Low Resistance or Shorted
' 35 Low Resistance Across Pins 8 and 9 at Diagnostic Monitor
' 41 Crash Sensor Circuit - High Resistance or Open
' 44 RH Crash Sensor - Not Mounted to Vehicle Properly
' 45 Center Radiator Crash Sensor - Not Mounted to Vehicle Properly
' 46 LH Crash Sensor - Not Mounted to Vehicle Properly
' 51 Diagnostic Monitor Internal Thermal Fuse - Blown and Short to Ground No Longer Exists
' 52 Backup Power Supply - Voltage Boost Fault
' 53 Internal Diagnostic Monitor Fault
Lowest -- Rapid Continuous Flashing of Air Bag Lamp - All Crash Sensors Disconnected
13 Open Oxygen Sensor Circuit 14 Coolant Temperature Sensor (High Temp Indicated) 15 Coolant Temperature Sensor (Low Temp Indicated) 21 Throttle Position Sensor (Signal Voltage High) 22 Throttle Position Sensor (Signal Voltage Low) 23 Manifold Air Temperature (MAT) Low Temp Indicated 24 Vehicle Speed Sensor (VSS) Circuit 25 Manifold Air Temperature (MAT) High Temp Indicated 32 Exhaust Gas Recirculation (EGR) Vacuum Control 33 Mass Air Flow Sensor (MAF) (GM/SEC High) 34 Mass Air Flow Sensor (MAF) (GM/SEC Low) 41 Cam Sensor Circuit 42 C3-I EST or Bypass Circuit Failure 43 Electronic Spark Control (ESC) Circuit 44 Oxygen Sensor Circuit (Lean Exhaust Indicated) 45 Oxygen Sensor Circuit (Rich Exhaust Indicated) 51 PROM Error 52 CALPAK Error 55 ECM Error If you have your owners manual they should be in there. I couldn't find one online but did find this.
The Check Engine light will light when the ECU stores a trouble code.
Counting the Flashes
To retrieve trouble codes, turn the ignition key to the "on" position with the engine OFF.
The Check engine light will flash many short blinks. The total number of blinks equals the code number. For example, flash,pause, flash,flash = code 12.If more than one code is stored, the Check engine light will flash the codes in sequence (lowest to highest) with a pause between each code. The codes will repeat until the key is turned to the OFF position.
Transaxle codes present
Diagnostic check only
Oxygen sensor circuit
Coolant sensor/high temperature
Coolant sensor/low temperature
PCM fault - pull-up resistor
6X signal fault (92-95 models)
Throttle position sensor-voltage high
Throttle position sensor-voltage low
IAT circuit low
VSS circuit-no signal
IAT circuit-Temp out of high range
Quad driver output fault
EGR system fault
MAP sensor - voltage out of range high
MAP sensor - voltage out of range low
IAC - rpm out of range
Ignition control circuit-open or shorted
Bypass circuit - shorted or open
IC control circuit grounded/bypass open
Knock sensor circuit shorted or open
O2 sensor indicates lean condition
O2 sensor indicates rich condition
Power steeringpressure circit(91 models)open or shorted
High idle indicates vacuum leak
PCM memory error
System voltage error
trans fluid temperature too high
Trans fluid temperature too low
A/C pressure sensor
ABS message fault
PCM internal communication fault
There is two sensors-blue for fuel mixture preparation & black with 4 pins for a gauge and overheating control.You told me that you has been change all sensors.Did you put new ones? Also check for engine coolant level sensor on a white plastic tank. there is not another reason for LED to blinking.
one or more of your actuators is malfuntioning. they ar eunder the dash. I had a mechanic repair mine for about 400 bucks. the dash needs to b removed and some very tight spots to work in. the flashing is maybe caused from the sensor. either outside air tempo sensor or inside. does it blink while showing the inside or ouside. not exactly sure where the inside is, but the outside is in the center in front of radiator when u open the hood. black about the size of a tube of chap stick.
DTC - 15 Engine coolant temp sensor error (low temp indicated)
This is an Diagnostic Trouble code using the OB1 which simply means the check engine light blinking in series at certain intervals.But my thinking says that if you are having trouble wuth any sensor , the ECU or PCU computer will read all kinds of things in error. Try replacing the TCS temperature control sensor.Only 96 and up have a OB2 Diagnostic system
Trouble Code 33 and 34 are the MAF/MAP Sensor
Circuit. It sounds like you've replaced that sensor already. Did you also have the code 34 before putting in the new sensor?
Or did this code start after it's replacement? Any other codes appearing?
Troubleshooting it would depend if it has the Speed Density
Update. The dealer should be able to provide that info.