P2060: Reductant Injection Air Pump Control Circuit Low

P2060 means the control line of the injection air pump or air valve is held at too low a level: when the output tries to switch it on, the voltage collapses because the wire or the load is connected to ground. Deutz defines exactly this on its EMR L1 controller as P2060-00, a high-side short to ground on output SPN 5796, which drives the air pump or valve. The driver protects itself, so the valve stays closed and atomizing air never reaches the dosing nozzle. Look for wires rubbed through on the frame or the engine block, a water-filled connector or a coil with a short to its housing. An open circuit of the same output is P2059, a short to battery P2061. DEF dosing is blocked until the short is removed.

Medium severity. Can I keep driving?Deal with it soon. If the instrument cluster shows a countdown, the car may not restart once it reaches zero.

Symptoms

Emission warning lamp on
DEF dosing blocked
Possible blown fuse in the air valve supply

Most likely causes

Control wire chafed through to ground
Valve or pump coil shorted to its housing
Water in the connector bridging to ground

What to check, in order

Start with the simplest. You can tick off each step.

Check the AdBlue/DEF level and quality, and do not add additives or water
With the connector unplugged, check whether the signal wire is making contact with ground.
Look for white crystals around the injector and the tank
Check connectors and heaters with the scanner
Run the dosing test available on your diagnostic tool
Replace parts only when the test points to that component

Good to know

Repair difficulty: medium
It can trigger limp mode.
It affects emissions.

What each character of P2060 means

P: Powertrain: engine and transmission
2: Generic code: same on every make
0: Subsystem depends on the code range
60: Specific fault in that system

Frequently asked questions

Can I keep driving with code P2060?

Deal with it soon. If the instrument cluster shows a countdown, the car may not restart once it reaches zero.

What causes code P2060?

The most common causes are: control wire chafed through to ground; valve or pump coil shorted to its housing; water in the connector bridging to ground.

Related codes

Sources

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.