Powertrain, generic (extended)

P2060 Reductant Injection Air Pump Control Circuit Low

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

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.

Likely causes

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

Symptoms

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

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–700
Time0.5–2.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

reductant air pump

Related codes

P2059P2061

References: serdia.deutz.com, law.cornell.edu, energy.gov.