The module measures its own supply voltage. CARB allows other monitors to be suspended below 11 V, and above a maker's threshold only if the voltage itself is diagnosed – that is what these codes record. GM's engine modules and Ford's PCM set them without warning lamp. P0560 is the general code without low/high split, used differently: Saab's 2002 9-5 transmission module sets it below 9 V or above 18 V for 1 s and goes into limp mode; Saab's EDC16 diesel only above 17 V (24 V charger or jump start); the GM-built 9-4X as a low-voltage code. GM's and Ford's engine modules use P0562/P0563 instead.
Medium severity. Can I keep driving?If the battery warning light comes on, you could get stranded. Turn off electrical accessories and go straight to a repair shop.
Symptoms
- Charge warning
- Transmission limp mode (Saab)
- Several modules report codes, starting problems
Most likely causes
- Battery weak or faulty
- Alternator or regulator (under- or overcharging)
- Jump start or charger at 24 V
- Corroded or loose battery terminals or ground strap
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: easy
- It can trigger limp mode.
What each character of P0560 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- 5: Speed and idle
- 60: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0560?
If the battery warning light comes on, you could get stranded. Turn off electrical accessories and go straight to a repair shop.
What causes code P0560?
The most common causes are: battery weak or faulty; alternator or regulator (under- or overcharging); jump start or charger at 24 V.
Related codes
- P0561System Voltage Unstable
- P0562System Voltage Low
- P0563System Voltage High
- P0620Generator Control Circuit
- P0622Generator Field/F Terminal Circuit
Sources
- saabwisonline.com: dtc b1325 b1330 b1517 c0800 p0560 p0562 or p0563
- saabwisonline.com: p0560
- saabwisonline.com: p0560
- law.cornell.edu: 13 CCR 1968.2
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.