The 2012 XC 70 AWD 3.2 non-turbo is running very rough. Volvo Stated a month ago the "4" coil was bad and cleared the error codes. O2 sensor error code has been coming and going away. I decided to replace all the spark plugs and coils. She purred after that.
3 days later low battery light and I could not turn the engine over. I got a jump and headed to the auto store to have them check on the battery (2019 when the other owner of the car replaced it). Dead cell, So I had them replace the battery.. Less than a week later same thing happen again. The battery was faulty. The voltage fluctuated a lot, too. The starter and alternator were checked out through the test, and they were good. The battery was replaced again. That pesky low battery keeps showing up.
So, I will look into a voltage reg. Then she, Last Tuesday, started idle and drive roughly. I could not accelerate. I got home and decided to change the voltage regulator. It needed it.
Cleaned the TB and hooked everything back up. She is worst.
Codes from the last month before the first clear by me today
P0301
P0302
p0303
p0304
p0305
p0306
p0300
p1573
P050b
Reduce engine performance
Error codes today after the clear.
P050B
P0300, 5,4,3,2,1
P1573
When back through everything, check all the connectors, coils, check the bolts and tighten if needed.
P1573
P0507 now.
Reduce engine performance
Cleaned the battery terminal and connectors..
So, What next? Fuel Filter? She is due for an oil change (holding off until she is running). ECM or TCM?
05/30/2023
P1573
throttle position 0.0%
engine rmp 0
barometric pressure 101 KPA
load value 0.0%
Air Flow Rate 0.00 GR/sec
MAP Sensor 101 KPA
Ambient air temperature 68F
Coolant Temp 69F
Intake Air Temp 69F
Ignition Timing Adv -5.6 Degree
Short Term Fuel Trim 1 0.0%
Long term Fuel Trim 0.0%
Short Trim Fuel Trim 2 0.0%
Long term Fuel Trim 0.0%
Short Trim Fuel Trim 3 -100.6%
long trim fuel 3 -100.6%
Short Trim Fuel Trim 4 -100.6%
long trim fuel 4 -100.6%
Vehicle speed 0 mph
Absolute Load Value 0.0%
Fuel rail Pressure (gauge) 198 KPAG
Fuel system 1 n/a
Fuel system 1 n/a
Relative Throttle Position 0.0 %
Commanded Throttle Actuator Control 23.1%
absolute Throttle Position B 0.0 %
Accelerator Pedal Position D 7.4 %
Accelator Pedal Position E 8.2 %
Commanded Evap Purse 0.0 %
Commanded Equivalence Ratio 0.997
Fuel Level input 38.8%
Control Module Voltage 11.928 v
Cylinders 2 and 3 Misfiring.
2012 XC70 AWD 3.2 non turbo - Running rough
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foggydogg
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