Replaced battery, throwing codes

rickbsgu

Member
Joined
Sep 20, 2020
Location
Saint George, Utah
TDI
2013 Jetta Sedan 6spd
2013, Jetta TDI, manual 6spd
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I replaced the battery with an Interstate H6, 70/760.

Since then, the car is throwing codes every time I start it up. The pertinent codes are:
  • 01598 - Drive Battery Voltage (static)
  • P06A3 - Sensor reference Voltage "D" Circuit/Open (intermittent)
  • P13D5,P13D4,P13D6 - Sensor for internal pressure of cylinder (Implausible signal, short circuit to ground, electrical error...)
If I clear the codes, they stay cleared for the rest of the drive (two hour drive, one instance). If I shut the car off and restart it, the engine light turns back on and some variation of the above codes are re-thrown.

I've disconnected and reconnected the battery, insured the terminal connections are tight and clean.

The car starts and runs fine, despite the codes. And, as stated above, once cleared, the engine light stays off and no codes are thrown for the rest of the drive.

I'm using an ODBEleven scanner with presumably pro level turned on - I don't see a way to register the battery. I'm in discussion with customer support to see why I don't have that (their latest reply was the car doesn't support adaptations, which I don't believe is correct.)

I think the P13XXX codes will go away once the running battery and reference voltage items are corrected.

Do I have a bad battery? Incorrect battery? (according to the Interstate site, this is the correct battery)

Any thoughts appreciated.

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Update: Talked to VW Dealer. Suggested alternator might be bad.

Update 2: Checked voltages: Battery 12.58 car off - while running (idle), 13.14. Doesn't seem like bad alternator.
 
Last edited:

rickbsgu

Member
Joined
Sep 20, 2020
Location
Saint George, Utah
TDI
2013 Jetta Sedan 6spd
Cleaned the ground and the leads to the fuses. Now getting 14.2 volts. Live scan shows 13.2 - 13.4 volts to terminal (spec is 11.2v to 13.5v)
01598 code went away.

I'm going to go ahead and replace the glow plugs and maybe the glow plug controller just for good measure.
 
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